Looking for eSIM reviews before you buy? We read the full text of 19,000+ recent customer reviews for 11 major providers. ByteSIM, Holafly, Jetpac and Saily top the customer ratings, each averaging above 4.7 out of 5. We have also tested every provider ourselves. Here is the full ranking, with what the reviews actually say, country by country.
Want to compare plans directly? Our comparison tool covers more than 23,000 eSIM plans, filtered by country and data size.
eSIM reviews contents
What real eSIM customers say about each provider
Every provider's marketing page says the same thing: fast, reliable, easy to set up. Real reviews tell a more useful story. We pulled the most recent customer reviews for each provider and sorted the patterns into what people like, what they complain about, and where the eSIM actually worked by country.
We have also tested every provider on this list with our own money. You can read our full review of each one by following the links in the sections below.
How we read these reviews, and what to watch for
We collected the most recent customer reviews for each provider: from 192 reviews for eSIM4Travel to 2,000 for the largest sample. That is 19,285 reviews in total, across 11 providers whose combined profiles hold more than 235,000 reviews. For each provider, we tallied star ratings and grouped repeated phrases into themes. We also noted which countries reviewers named as working well or not.
A few honest limits on what online reviews can tell you:
- Providers encourage reviews differently. Some send a follow-up email after every purchase; others run in-app prompts or loyalty bonuses. A provider with 106,000 reviews and one with 4,000 are not necessarily more or less reliable, but the review pool may not represent typical customers equally.
- Happy customers review less often than frustrated ones. A 4.7-star average does not mean 4.7 trips out of 5 went perfectly. It means that of the customers who bothered to write a review, most were positive. The ones who never connected at all often do not come back to say so.
- The most useful signal is in the negative reviews and the country lists. A recurring complaint about a specific country (for example, connections that fail in the UK or throttling in Southeast Asia) usually reflects a real, structural problem with that provider's roaming partner in that region. That is the part of a review set worth reading most carefully.
- Country results come from countries named in review text, not a structured field. Reviews that praise or complain without naming a country are not counted.
Want the plans, not just the reviews? Our comparison tool lets you filter all 23,000+ plans by country and data size in a few seconds.
eSIM providers ranked by customer review score
Here is how the 11 providers stack up, ranked by average customer star rating across the most recent reviews collected.
| Rank | Provider | Customer rating | Total reviews |
|---|---|---|---|
| 1 | ByteSIM | 4.81 / 5 | 4,113 |
| 2 | Holafly | 4.77 / 5 | 106,228 |
| 3 | Jetpac | 4.76 / 5 | 3,407 |
| 4 | Saily | 4.73 / 5 | 29,301 |
| 5 | Yesim | 4.38 / 5 | 2,939 |
| 6 | GigSky | 4.37 / 5 | 5,568 |
| 7 | Nomad eSIM | 4.30 / 5 | 41,789 |
| 8 | eSIM4Travel | 4.29 / 5 | 192 |
| 9 | Airalo | 4.21 / 5 | 38,533 |
| 10 | Global YO | 3.94 / 5 | 1,391 |
| 11 | GoMoWorld | 3.82 / 5 | 1,816 |
Keep in mind that a higher review count does not automatically mean a more reliable score. eSIM4Travel's 192 reviews mean a single bad trip can move the number noticeably. Holafly's 106,000 reviews give it one of the most stable averages on this list.
1. ByteSIM: the highest average score and the fastest support in the dataset
ByteSIM tops the ranking with a 4.81 out of 5 average and a 1-star share of just 3.2%, the lowest of any provider here. Over a third of all reviews (36.1%) specifically mention fast WhatsApp support, often with replies within minutes at any hour of the day. A further 29% praise support quality in general, making it the most support-praised provider in our dataset.
The most common complaint, still relatively rare, is speeds that fall short of advertised 5G in some countries. A small group (about 1%) reports the "unlimited" plan hiding a daily cap that is not shown on the pricing page. Hong Kong is the one destination where results are genuinely split between positive and negative reports.
- Works well in: USA, Japan, Vietnam, Indonesia, China, Thailand, South Korea
- Mixed results in: Hong Kong
Read our full ByteSIM review, or see current ByteSIM plans.
ByteSIM: Summary of customer reviews
4.8/5
4,113 reviews
★★★★★
Customers often mention
Support replies fast, often within minutes, even overnight.
Speeds sometimes fall short of the advertised 5G, running at LTE or 3G.
Customer service quality is consistently the most-praised part of the experience.
A minority report refunds being refused despite a stated policy.
Agents are knowledgeable and stick with problems until they're fixed.
Occasional QR code or activation failures block setup.
Examples of typical reviews
My eSIM wouldn't work, so I messaged WhatsApp support and got a reply within minutes, even at an unusual hour, with clear instructions that fixed the connection right away.
My 'unlimited 5G' plan performed well below what was advertised, running at throttled or LTE speeds for the whole trip. When I contacted support they attributed it to the local network.
After I discovered my phone wasn't eSIM-compatible, I contacted support and had a full refund processed right away, with no extra questions.
The QR code failed to scan at first, but I contacted support and they sent a replacement eSIM that got things working, and the connection was solid for the rest of the trip.
Countries where people have good experiences
United States 40 
Japan 25 
Vietnam 23 
Indonesia 18 
China 17Countries where people have worse experiences
Hong Kong 72. Holafly: unlimited data, with a catch worth reading in advance
Holafly has the largest review count of any provider we checked: over 106,000, averaging 4.77 out of 5. Easy installation is the top praise (23.6% of reviews), followed by fast data speeds (19.7%) and a reliable connection (17.4%). Repeat customers are common: 14.3% explicitly say they would use Holafly again.
The dominant complaint in negative reviews is a connection that works at first, then stops mid-trip. About 1.6% of all reviews raise refund problems: slow, partial, or denied refunds. A recurring frustration is an AI chatbot that asks for the same information repeatedly without solving the problem before a human takes over. The "unlimited" hotspot is throttled after a daily cap (reported as 1 GB per day on some packages) that is not shown on the pricing page, only in the terms.
- Works well in: USA, UK, Japan, Portugal, Italy, France, India, Spain, Turkey
- Mixed or worse results in: China (failures there are harder to fix due to local app restrictions), Madagascar
Read our full Holafly review, or see Holafly's unlimited plans.
Holafly: Summary of customer reviews
4.7/5
106,228 reviews
★★★★★
Customers often mention
Support is fast, patient and available around the clock over chat.
Unlimited data can slow down heavily after a daily threshold.
Setup is quick, and the connection often works right on landing.
Some plans do not allow hotspot or tethering to other devices.
Agents often go the extra mile to make things right.
A minority never got the eSIM working and had to seek refunds.
Examples of typical reviews
I had a small activation question and reached chat support within minutes. The agent stayed with me until data was live, and the connection was strong for the whole trip.
The unlimited plan slowed to a crawl after heavy use each day, which made video and maps hard to use by evening. Support explained the fair-usage policy, but it was not clear at purchase.
The eSIM has been reliable across many countries and setup takes only a few minutes. I keep coming back for the convenience.
The data worked, but the plan did not allow sharing to a laptop, which I needed for work. It was fine for phone use only.
Countries where people have good experiences
United States 112 Japan 78 
Italy 64 
Spain 59 China 46Countries where people have worse experiences
China 46 
Thailand 18 
Brazil 123. Jetpac: airport lounges and a free VPN, with the fastest-praised support on the list
Jetpac averages 4.76 out of 5, with the strongest support pattern in the entire dataset: 48.4% of reviews, almost half, specifically praise how fast support replied. A further 30.9% praise the quality of customer service. Individual agents are named and thanked in 15.9% of reviews, a level of personal recognition unusual for any eSIM provider. The WhatsApp and live-chat channel is called out by name in 20.6% of reviews as the reason the problem got fixed quickly.
The top complaint is the eSIM failing to connect or stopping mid-trip (4.2% of reviews). An automated bot stands between users and a human agent in many cases (4.1% mention this), though the bot usually hands off quickly. Throttling on "unlimited" plans is a smaller but real complaint: speeds drop to around 256 kbps after a daily cap (reported as approximately 3 GB), which makes video and most apps unusable. There are no truly unlimited data plans.
- Works well in: USA, Japan, Thailand, Mexico, Australia, New Zealand, Morocco, Turkey
- Mixed results in: UK, Singapore, Canada, France, China, Taiwan
Read our full Jetpac review, or check Jetpac plans. If fast support matters most to you, see our ranking of the best eSIM customer support.
Jetpac: Summary of customer reviews
4.7/5
3,407 reviews
★★★★★
Customers often mention
Support is fast, and problems are frequently solved within minutes.
The eSIM occasionally shows a signal but delivers no usable data.
The customer service team is described as excellent and knowledgeable.
An automated bot sometimes stands between the user and a human agent.
Setup, download and activation are usually smooth.
A minority report a patchy or slow connection.
Examples of typical reviews
I hit a snag activating my eSIM, messaged support on WhatsApp, and had the problem fixed within minutes by a helpful named agent. Highly recommended.
My eSIM showed a 5G connection but nothing would load, and it never worked properly for the whole trip.
I want to name a specific support agent who spent time troubleshooting and resolved my connection issue quickly and kindly.
An automated bot handled the first troubleshooting steps without success, and it took several hours before a human agent stepped in to fix things for me.
Countries where people have good experiences
United States 105 Japan 37 Thailand 19 
Mexico 13 
Australia 12Countries where people have worse experiences
China 27 
United Kingdom 20 
Singapore 9 
Canada 9 
France 94. Saily: the easiest setup in the dataset, with one billing problem to watch
Saily averages 4.73 out of 5. Over half of all reviews (55.1%) call out how easy the eSIM was to buy and install, the single most repeated praise in this whole dataset. The 1-star share is low at 2.6%, and 97% of reviews receive a company reply.
The most common complaint in negative reviews is billing: surprise auto-renewal charges and refused refunds, mentioned in 1.0% of all reviews. A small group reports connectivity failures or throttling after a daily cap (speeds drop to around 1 Mbps after 5 GB on EU plans). The "unlimited" cap is tighter than some competitors, reported as 1 GB per day at full speed on some packages. An AI bot handles first contact and some reviewers find it goes in circles before reaching a human.
- Works well in: USA, Turkey, Japan, Thailand, India
- Mixed or worse results in: UK, Mauritius, Mexico
Read our full Saily review, compare it in our Airalo vs Saily guide, or see Saily plans.
Saily: Summary of customer reviews
4.7/5
29,301 reviews
★★★★★
Customers often mention
Buying, installing and activating the eSIM is described as quick and intuitive.
Some reviewers report refunds refused or surprise auto-renewal charges.
The eSIM is ready fast and data performs well once connected.
The eSIM occasionally fails to connect or drops out entirely.
Reviewers confirm the eSIM worked as expected on their trip.
A minority find speeds too slow, sometimes throttled after a daily cap.
Examples of typical reviews
It was my first time using an eSIM and it was quick and simple to install and use, with no complications.
My service failed and I was unexpectedly charged again, and when I asked for a refund it was declined.
I had a strong connection everywhere I went, and the plan didn't start until I actually arrived at my destination.
The eSIM activated but never picked up a signal, so I had to buy a local SIM instead.
Countries where people have good experiences
United States 10 
Turkey 7 Japan 5 Thailand 4 
India 4Countries where people have worse experiences
Mauritius 5 Mexico 4 United Kingdom 115. Yesim: good prices per GB, with a 10.3% one-star share worth understanding
Yesim averages 4.38 out of 5. The top review theme is customers saying they will use it again (13.5%), followed by a reliable connection and good prices per GB. The 1-star share of 10.3% is noticeably higher than the four providers above it.
The main drivers of negative reviews are connection failures and billing disputes. One practical warning that shows up repeatedly: the plan starts counting down the moment you buy it, not when you arrive at your destination. Buy close to your travel date. Refund disputes are a recurring negative theme, with some reviewers reporting credit offered inside the app instead of a real refund.
- Works well in: Turkey, Egypt, USA, Thailand, UAE
- Worse results in: Mexico
Read our full Yesim review, or check Yesim plans.
Yesim: Summary of customer reviews
4.3/5
2,939 reviews
★★★★★
Customers often mention
Many reviewers explicitly recommend it or say they'll use it again.
The eSIM occasionally never connects at all, wasting the money spent.
The eSIM connects without issues and stays reliable throughout the trip.
Some reviewers struggle to get a refund or face unexpected charges.
Installing and activating the eSIM is quick and simple.
A minority feel the plan is too expensive for what's delivered.
Examples of typical reviews
I used the eSIM across two cities on one trip with no connection problems the whole way, and I'd use it again.
I paid for a 30-day plan that never worked at all during my trip. Complete waste of money.
Support solved my problem within minutes and I've now booked a second time.
An unexpected charge appeared on my account, and no refund or compensation was offered when I first reached out.
Countries where people have good experiences
Turkey 67 
Egypt 45 United States 42 Thailand 34 
UAE 21Countries where people have worse experiences
Mexico 7 United Kingdom 106. GigSky: cruise ships, airlines, and the only app that still works after your data runs out
GigSky averages 4.37 out of 5. It is a genuinely different kind of provider: it operates its own virtual mobile network with dedicated coverage on more than 190 cruise routes, open water in the Gulf of Mexico and North Sea, and more than 20 airlines. No other provider on this list offers that.
The top review praise is that it simply works (20.6% of reviews), followed by ease of use (18.1%) and convenience for travel (15.2%). The Visa-card partnership (free 5 GB on qualifying Visa cards) is mentioned positively by 10.7% of reviewers. The main complaints are connection failure or dropouts (5.1% of reviews) and slow speeds (4.2%). The UK is the only country that shows a meaningful split: 18 positive reports vs 9 negative, so results there are mixed.
- Works well in: France, Italy, USA, Portugal, Spain, Greece, Japan, Canada
- Mixed results in: UK
Read our full GigSky review, or check GigSky plans.
GigSky: Summary of customer reviews
4.3/5
5,568 reviews
★★★★★
Customers often mention
Worked as expected and stayed reliable for the whole trip.
The eSIM sometimes failed to connect at all or stopped mid-trip.
Easy to purchase, install and activate.
Data can be frustratingly slow even when connected.
Kept people connected abroad and made travel simpler.
Signal occasionally cut out or fluctuated during use.
Examples of typical reviews
My eSIM began working while I was still flying into the country and performed very well for the whole trip.
The service kept dropping out and left me without internet for much of the trip. I wouldn't recommend it.
I picked up several gigabytes of free data through a Visa card partnership and it was a great, trouble-free bonus.
Switching countries mid-trip caused activation issues that took me some trial and error, including outside help, before it started working.
Countries where people have good experiences
France 33 United Kingdom 27 United States 23 Italy 21 
Portugal 20Countries where people have worse experiences
United Kingdom 277. Nomad eSIM: easy setup praised by most, but support and unlimited plan limits are frustrating
Nomad eSIM averages 4.30 out of 5 across 41,789 reviews. Easy setup and installation is the top praise (16.2%), followed by the eSIM just working without problems (11.6%). Strong coverage in China is a standout: 102 reviews mention China, with 81 positive vs 21 negative, making it one of the better performers for that destination.
The main negative themes are connectivity failures (3.5% of reviews), slow speeds (1.9%), and dropping signal (1.8%). Refund difficulties (1.3%) and unhelpful support (1.0%) round out the complaints. Before buying an "unlimited" plan: full speed is capped at 2 GB per day, after which speeds drop. New users get a free 1 GB trial worth testing first.
- Works well in: China, USA, France, Japan, Turkey, Italy, UK, Spain, Canada, Australia, Thailand, Morocco
- Mixed results in: Greece
Read our full Nomad eSIM review, or check Nomad plans.
Nomad: Summary of customer reviews
4.3/5
41,789 reviews
★★★★★
Customers often mention
Installing, activating and using the eSIM is simple and quick.
The eSIM occasionally fails to connect or provide internet.
Many report the eSIM working flawlessly across trips and countries.
Connection can be present but painfully slow.
Reviewers frequently say they'll reuse or recommend the service.
Signal is sometimes spotty or drops, especially indoors.
Examples of typical reviews
The eSIM was very simple to install on multiple phones, worked reliably throughout a 10-day trip, and offered great value. I'll reuse it.
The internet simply didn't work on my device for a whole day, cutting in and out unpredictably regardless of location.
I've used this across multiple countries and the connection has been reliable everywhere, with no trouble in any overseas country.
Indoor signal disappeared entirely after two weeks in one destination, even though outdoor coverage had been fine.
Countries where people have good experiences
China 102 United States 57 France 49 Japan 46 Turkey 39Countries where people have worse experiences
Greece 238. eSIM4Travel: fast human support and very low prices, with only 192 reviews to go on
eSIM4Travel averages 4.29 out of 5 based on only 192 reviews, so treat its position with more caution than the bigger providers above it. Fast, problem-solving support is the top theme at 41.3% of reviews. That is an unusually high share and it points to a real strength: reviewers consistently describe reaching a human quickly over chat, with the issue resolved without being passed around.
There is no app. Everything runs through a website, available in multiple languages. That means no top-up without Wi-Fi if your data runs out while traveling. Prices are among the lowest on this list for the same amount of data. There are no unlimited plans. The "Best Europe 35" regional plan, covering 35 European countries in one purchase, is a genuinely useful option for European trips.
- Works well in: USA, Albania, Turkey
- Worse results in: Bosnia and Herzegovina
Read our full eSIM4Travel overview, or check eSIM4Travel plans.
eSIM4Travel: Summary of customer reviews
4.3/5
192 reviews
★★★★★
Customers often mention
Support responds fast and often solves problems on the spot.
Data can be slow, unstable, or drop in and out repeatedly.
Prices are frequently called the cheapest option available.
The eSIM sometimes never works at all in the destination country.
Buying, installing and activating on arrival is simple and quick.
"Unlimited" plans can be capped by a daily fair-usage limit.
Examples of typical reviews
I hit an activation snag, contacted live chat, reached an agent within minutes, and had it resolved with a free replacement. I'll use the service again.
The eSIM installed and activated fine, but the connection was slow and dropped repeatedly at my destination, making it unreliable for navigation.
I've relied on this provider for two and a half years across several trips with no real issues.
I bought a country-specific eSIM that turned out to be unusable there from the start.
Countries where people have good experiences
United States 11 
Albania 7 Turkey 6 Canada 5 France 5Countries where people have worse experiences
Bosnia & Herzegovina 5 
Malaysia 3 
Madagascar 29. Airalo: the most reviewed provider, with strong app ratings and a higher 1-star share
Airalo averages 4.21 out of 5 across 38,533 reviews, more than any provider here except Holafly. Easy installation is the top praise (26.1% of reviews), followed by reliability across repeat trips (13.1%) and responsive support (11.5%). App store ratings are excellent: 4.6 on iPhone and 4.5 on Android, both from tens of thousands of reviews.
The 1-star share of 11.4% is one of the highest here. The main drivers are connection failures and refund disputes. A chatbot handles first contact and reviewers frequently describe it suggesting basic installation steps even after the eSIM is already active. Some reviewers also note prices are on the expensive side relative to alternatives for the same amount of data.
- Works well in: USA, Japan, Canada, Thailand, Portugal
- Worse results in: Italy, Spain, Mexico, China, Switzerland
Read our full Airalo review, compare it in Airalo vs Holafly or Airalo vs Saily, or see Airalo alternatives if it is not the right fit for your trip.
Airalo: Summary of customer reviews
4.0/5
38,533 reviews
★★★★★
Customers often mention
Easy to buy, install and use, usually done in minutes.
eSIM sometimes never connects at all, no data or signal.
Reliable enough to work every time across repeat trips.
Disputes over refunds when the service never worked.
Helpful, responsive support that gets problems sorted quickly.
Slow speeds and weak signal, sometimes 3G or E only.
Examples of typical reviews
Downloaded the app and bought the plan before departure, and had internet the second the plane landed, no hunting for a SIM at the airport. The connection stayed strong for the whole trip and was fast enough for maps and video calls. The same data would have cost several times as much on my own carrier. I'll use it again.
After years without trouble the eSIM never connected. Chat tried to help but couldn't fix it, and roughly $40 was lost. We made do with WiFi only when available, and I expect to switch providers.
Installation was simple, everything worked perfectly, and help over chat and WhatsApp came back very quickly.
The install was difficult, the guide didn't match how the settings are actually named on my phone, and it took hours to sort out. Support got the data working in the end, but in some regions speeds dropped to 3G and pages and maps took a long time to load. Usable for the price, but I expected fewer snags.
Countries where people have good experiences
United States 22 Japan 12 Canada 11 Thailand 8 Portugal 5Countries where people have worse experiences
Italy 8 Spain 8 Mexico 7 China 6 
Switzerland 510. Global YO: replies to 99.9% of reviews, but the 20% one-star share points to real problems
Global YO averages 3.94 out of 5 from 1,391 reviews, and replies to 99.9% of them, the highest reply rate in this dataset. Convenience and global coverage is the top positive theme (30.0% of reviews), followed by good connection and speed (15.9%) and the eSIM working without problems (13.7%). Prices and value are praised by 12.2% of reviewers.
The 1-star share is 20.0%, second highest here. The top complaints are the eSIM not working at all on arrival (10.2% of reviews), accusations of scam behavior (2.8%), and money charged for no working service (1.8%). Refund refusals are a recurring pattern, including for never-activated eSIMs. The USA has the most mentions of any country (47 reviews) but with 20 negative reports out of 47, it is one of the more mixed destinations for this provider.
- Works well in: Turkey, Italy, Europe broadly, Mexico, Thailand, Spain, UAE
- Mixed or worse results in: India, Bolivia, USA (meaningful minority of failures)
Read our full Global YO review, or check Global YO plans.
Global YO: Summary of customer reviews
4.1/5
1,391 reviews
★★★★★
Customers often mention
One eSIM covers many countries, installable before departure.
The eSIM sometimes fails to connect, activate, or provide data.
Signal and speed are frequently described as strong and dependable.
Some reviewers call the company a scam or misleading about coverage.
Many report everything working flawlessly with no issues.
A number of buyers say they were charged with no working eSIM delivered.
Examples of typical reviews
One Global YO eSIM has covered me across several countries without ever letting me down, and it's now a standard part of my travel kit.
My eSIM failed to connect on arrival, with no easy way to get help through the app, so I was forced to buy a competitor's SIM instead.
I roam between countries as a seafarer and this has been a reliable, cost-efficient option that has worked well for over a year.
My card was charged but no eSIM ever appeared in my account, and support never resolved it.
Countries where people have good experiences
United States 47 Turkey 37 Italy 31 Mexico 26 Canada 26Countries where people have worse experiences
India 14 
Bolivia 511. GoMoWorld: the lowest customer score on this list
GoMoWorld averages 3.82 out of 5, the lowest in this ranking, with a 1-star share of 20.6%. The most commonly cited problems in negative reviews are connection failures, slow or unusable speeds, and support that is hard to reach outside weekday business hours. Human help only runs weekdays from 8:00 to 17:00, and the terms allow up to 48 hours just to acknowledge a complaint and up to 10 working days to resolve one.
One term worth reading before you buy: any unused credit is lost the moment your plan expires, with no grace period. GoMoWorld issues proper VAT invoices, a useful detail for business travelers. The countries where reviews are positive tend to be those where the underlying network partner is strong; where the partner is weaker, the failures show up clearly in the review pattern.
- Works well in: Turkey, Spain, Colombia, Egypt, USA
- Worse results in: Mexico, Morocco, France, Japan, Switzerland, China
Read our full GoMoWorld review, or check GoMoWorld plans.
GOMO World: Summary of customer reviews
3.8/5
1,816 reviews
★★★★★
Customers often mention
Buying, installing and activating through the app is simple and hassle-free.
The eSIM sometimes shows active but delivers no data or signal.
Many say the connection worked perfectly or as expected.
Reviewers who couldn't get the service working ask for refunds.
Frequently cited as cheaper than local SIMs or home-operator roaming.
Even when connected, speed can be too slow or prone to dropping.
Examples of typical reviews
Setup was quick and effortless, and my eSIM connected the moment I landed, with good value and no hassle.
My eSIM never worked at the destination despite showing as active, leaving me without service and out of pocket.
The app clearly tracks data used, and support transferred a mistaken country purchase without any hassle.
I contacted support after a connection failure but there was no phone line, and being unable to get online made it hard to reach anyone.
Countries where people have good experiences
United States 38 Turkey 26 Spain 23 
Colombia 20 Egypt 15Countries where people have worse experiences
France 19 
Morocco 16 Mexico 15 Japan 15 Switzerland 12Perks worth knowing about
A few providers offer something useful that does not show up on the pricing page.
- Free trials. GigSky offers a free 100 MB plan with no payment details required. Nomad eSIM gives new users a free 1 GB trial. Both are a low-risk way to check a network before buying.
- Coverage nobody else offers. GigSky has dedicated data plans for more than 190 cruise routes, open water in the Gulf of Mexico and North Sea, and more than 20 airlines.
- Built-in extras. Saily bundles a VPN and ad blocking from NordVPN. Jetpac includes a 30-day ExpressVPN trial, free airport lounge access during flight delays, and unlimited WhatsApp and Google Maps on packages over 3 GB.
- Loyalty and referral credit. Yesim's "Ycoins" reward your first top-up and referrals. Global YO runs a YOYO$ program for regular users. Nomad eSIM and Saily both give a small credit for each referral.
- Business-friendly invoices. GoMoWorld issues invoices with VAT information, useful if you need to expense your data plan.
What negative eSIM reviews complain about most
The same handful of problems repeat across every provider, regardless of their average rating.
- The eSIM never connects. Every provider has this as a top complaint, from 4.2% of Airalo reviews to 10.2% of Global YO reviews. It is the single most common reason for a 1-star review across the whole dataset.
- "Unlimited" is not always unlimited. Holafly, Nomad eSIM and Saily all apply a daily fair-use cap before speeds drop, and it is rarely clear from the pricing page. Check the exact GB figure in the terms before you buy. Our guides on what 5 GB of data actually gets you and whether 10 GB is enough can help you pick a real number.
- Refunds are inconsistent. Airalo, Saily, Yesim, Nomad, GoMoWorld and Global YO all have recurring refund disputes. Credit is sometimes offered inside the app rather than as money back.
- Bots slow down support. Airalo, Holafly, Jetpac, Nomad and Yesim all have reviewers describing a chatbot that loops before a human takes over. ByteSIM, Jetpac (once past the bot) and eSIM4Travel have the opposite pattern: a human replies fast over WhatsApp or chat.
- Plans that start the clock at purchase. Yesim is the most-mentioned provider for this: the timer starts when you buy, not when you land. If you buy three days early, you lose three days of your plan before the trip even starts.
For the providers whose support consistently comes out ahead, see our best eSIM customer support ranking.
Which countries give eSIM users the most trouble
One country stands out across the whole dataset: the United Kingdom. It appears as a mixed market for GigSky, Jetpac, Saily, Yesim and Airalo, which points to something about UK mobile networks or roaming agreements rather than any single provider.
China is the second recurring case. Nomad eSIM and ByteSIM report it working well overall, but failures there are harder to fix because China's network restrictions block many of the apps and workarounds travelers rely on.
France shows a mixed pattern for GoMoWorld and Jetpac, while working well for GigSky, Nomad eSIM and eSIM4Travel. If you are traveling to any of these three countries, check our comparison tool for the specific local carrier each plan uses, since the underlying network, not the eSIM brand, usually explains the difference.
Frequently Asked Questions
Which eSIM provider has the best reviews in 2026?
Can you trust Trustpilot eSIM reviews?
What do most negative eSIM reviews complain about?
Does an eSIM work the same way in every country?
Is an 'unlimited' eSIM data plan really unlimited?
Our verdict on eSIM reviews
If customer review scores are your main guide, ByteSIM, Jetpac and Saily are the strongest picks. If you are heading to the UK, China or France, have a backup plan ready, since even the top providers show a real minority of failures in those three markets. For any provider, the most useful part of reading reviews is not the average star rating: it is the pattern of what goes wrong and in which country.
These eSIM reviews cover one side of the picture. For prices, install notes and the fine print in each provider's terms, read our tested comparison of the best eSIM providers, or check every current plan for your destination with our comparison tool, filtered by the country and data size you actually need.
What is eSIM?
eSIM allows you to use a digital SIM card instead of a traditional plastic one. This enables you to purchase a SIM card online for the country you're traveling to.
The most well-known eSIM providers on the market are Airalo, Holafly, eSIM4Travel, Yesim, Saily and others.
Frequently asked questions about eSIM:
- Does my phone have eSIM?
- How to add eSIM to iPhone or Samsung?
- How to install eSIM on an older phone?
- What are the most affordable and best phones with eSIM support?
How to compare eSIM?
Here you can compare eSIM data packages for more than 200 countries, such as UK, USA, Egypt and others. And that for any duration and amount of data.
Along with additional information, such as provider ratings and whether the website is available in Czech.
Compare all eSIMs
Why can you trust Vefru?
Founders František and Jan experienced problems with mobile data every time they traveled outside the EU. As technology enthusiasts, the idea of traveling abroad without a data connection or risking truly insane roaming fees was unacceptable to them. Regardless of how adventurous the story of walking across Toronto on a winter night without an online map might be, it's not something they would want to repeat.
After the emergence of eSIM and later eSIM travel data package providers, they learned a lot about the technology and industry and decided to share their findings and the comparison tool they created for themselves with others. It now contains more than 20,000 updated eSIM mobile data packages from the most popular providers for more than 170 countries around the world.
Every time you read a guide on Vefru, it is created in the same way the author would research the topic themselves. From contacting locals about the best network operators, to recommending the most advantageous plans for what you really need, to technical guides on how to create a QR code for eSIM or how to troubleshoot eSIM issues. Most articles are created based on topics that the authors themselves have dealt with and for which they found the best solutions.
Technology experts
instead of copywriters
We test everything we
write about
We compare 20 thousand
eSIM data packages
