Best eSIM for San Francisco (2026): Tested Providers, Networks and Prices

San Francisco: Hills, Tunnels and Roaming eSIMs

San Francisco packs a lot into seven square miles: cable cars climbing Nob Hill, the ferry to Alcatraz, the fog rolling over the Golden Gate Bridge, and the tech campuses an hour south. Visitors move between them on Muni, BART, ferries and rental cars, and every leg starts with a map on the phone.

It is also a city where roaming eSIMs struggle more than the marketing suggests. The BART tunnel under the bay is a known dead zone, and Highway 1 down the coast has long silent stretches. Several travelers in our review set found their eSIM too slow for Google Maps in the city itself. Provider choice matters here.

We buy every eSIM at Vefru ourselves and test it from checkout to support ticket. Where a provider left travelers staring at a blank map on Market Street, we say so. The countrywide comparison is in our best eSIM for the USA guide.

Which eSIM Providers Are Cheapest in the US?

Providers sell different amounts of data at different prices, so price per GB is the fairest way to compare them. Each bar below shows a provider's median price per GB for its United States plans with 1 to 10 GB of data and 6 to 14 days of validity, which covers most one- and two-week trips. The shorter the bar, the less you pay for each GB. A United States plan costs the same wherever you use it in the country, so these prices apply to San Francisco too.

A low price per GB isn't the whole story. Compare it with how often each provider worked for travelers in the United States in the chart above, and check the speed caps and plan sizes in the provider sections below before you buy.

San Francisco eSIM Plans at a Glance

The plan statistics above come live from our United States database and update themselves, so they stay correct after the prices in this text drift. One plan covers San Francisco, the Silicon Valley campuses, the drive to Yosemite and every other state, with Alaska the only gap on some providers. The Pacific does not count as coverage, so a Bay cruise or a whale-watching boat beyond the Golden Gate drops you off the network.

Networks in San Francisco, Under the Bay and Down the Coast

Three carriers cover the United States, T-Mobile, AT&T and Verizon, and every travel eSIM rents space on one or more of them; UScellular's customers joined T-Mobile in August 2025. San Francisco tests that arrangement harder than most cities, because steep hills, tall towers and the tunnel under the bay create shadows where a single-network eSIM has nowhere to go.

Opensignal's July 2026 report measured T-Mobile's download speed at 192.5 Mbps, AT&T at 96.0 Mbps and Verizon at 89.4 Mbps, with Verizon taking the coverage prize and AT&T the top time-on-network figure of 99.6%. In the Bay Area that means T-Mobile for downtown speed, Verizon for the coast road and the Sierra, and AT&T as the dependable middle. Our guide to eSIMs with multiple networks shows how to switch when one carrier stalls on Nob Hill.

Within the city all three networks offer 5G, and T-Mobile usually leads on speed. The geography fights back. Steep hills shadow entire streets, the trans-bay BART tunnel between Embarcadero and West Oakland has no signal, and the Muni Metro tunnels under Market Street are patchy. Reviewers confirm the effect. A Ubigi customer lost connection for a few hours one afternoon in San Francisco. A ByteSIM user on T-Mobile saw four bars and 5G but could not load a web page in Palo Alto, while the connection in San Francisco proper was fine.

Nomad and Holafly collected the sharpest Bay Area complaints. One Nomad family had no connection along Highway 1 and in downtown San Francisco on a 19-day road trip. Another called service in the SF area really bad, and a third described LA, SF and Santa Cruz as terrible. Two Holafly reviewers said their unlimited plan ran at 2G speeds in SF and could not open Google Maps. Against that, other Nomad users praised coverage in San Francisco and held a video conference from a Silicon Valley hotel, and Jetpac and Ubigi reviewers had good coverage throughout.

For a rental in the Sunset or a cabin near Yosemite, check the address on the FCC's National Broadband Map or T-Mobile's coverage map. The carriers model both for an outdoor user who is not moving, at 5 Mbps, so a covered block can still be silent inside a Victorian with thick walls. Our 4G vs 5G guide explains why a 5G icon in Palo Alto did not help one ByteSIM reviewer load a page.

Eight Providers Tested for the Bay Area

Each of the eight providers below passed our hands-on test, has a live plan table on this page, and carries enough US reviews to judge for the Bay Area. Bay Area reviews lean negative. Jetpac and Ubigi came through clean, Global YO worked for one traveler, and Nomad and Holafly drew repeated complaints about maps refusing to load.

eSIM4Travel for San Francisco: Two Networks for the Hills, Verizon for Yosemite

8.8 /10

Vefru score Excellent Score details

• Purchase process8/10
• eSIM installation8/10
• Customer support10/10
• Speed test8/10
• Prices10/10

Average of five categories from our own paid test. eSIM4Travel has no app, so we do not score one.

eSIM4Travel is an American eSIM provider with coverage in 170 countries. It offers very competitive prices and a reliable connection, even without an app.

Key facts

• 170 countries
• No app
• Web only
• Top-ups
• Hotspot
• No throttling

Pros and cons

Pros 4 Cons 2

Simple installation and activation.

Very competitive prices.

Excellent customer support.

Works right away, no restart needed.

No mobile app.

No unlimited data plans.

eSIM4Travel eSIM in our hands

Go to eSIM4Travel website View full review

eSIM4Travel is the top scorer in our US test at 8.80, with 10/10 for price and 10/10 for support, and in San Francisco its two-network plan earns its keep. The separate three-network plan adds Verizon, the carrier that reaches furthest along Highway 1 and into the Sierra foothills, and it is the one to buy for Yosemite. Reviewers praise the price and the fast support, one getting a free replacement after a broken phone.

Our eSIM4Travel review has the screenshots.

Saily for San Francisco: Built for Silicon Valley Video Calls

8.5 /10

Vefru score Excellent Score details

• Purchase process7/10
• Mobile app9/10
• eSIM installation9/10
• Customer support10/10
• Speed test8/10
• Prices8/10

Average of six categories from our own paid test.

Saily is a modern travel eSIM from the makers of NordVPN, with coverage in 180 countries. It offers a top-notch app with well thought out features, like a built-in VPN, and fast customer support.

Key facts

• 180 countries
• iPhone app 4.7
• Android app 4.5
• Top-ups
• Hotspot
• 1 GB/day cap

Pros and cons

Pros 3 Cons 3

Clear and intuitive app with a modern design.

Very fast and efficient customer support.

Smooth eSIM installation directly from the app.

You need to install the app to get the eSIM after purchase.

App stops working when data runs out (no zero-rating).

Problematic personal data processing from a GDPR perspective.

Saily eSIM in our hands

Go to Saily website View full review

Saily is our recommendation for a Silicon Valley business trip. Its unlimited plan allows 5 GB a day at full speed before slowing to 1 Mbps, the most generous daily cap here, and hotspot use is unrestricted, so a laptop can ride on your phone through a hotel with weak Wi-Fi. Saily scored 8.50 in our test with the best app (9/10) and top support (10/10), and installs inside the app with no QR code.

Our Saily review has the speed tests and Airalo vs Saily the comparison most business travelers ask for.

Airalo for San Francisco: Popular, With One Toggle-Off Warning

7.3 /10

Vefru score Very good Score details

• Purchase process9/10
• Mobile app8/10
• eSIM installation9/10
• Customer support7/10
• Speed test7/10
• Prices4/10

Average of six categories from our own paid test.

Airalo is a popular eSIM marketplace with coverage in 211 countries, fast activation and affordable prices. However, it is not always the best choice for unlimited data.

Key facts

• 211 countries
• iPhone app 4.6
• Android app 4.3
• Top-ups
• Hotspot
• No speed limits

Pros and cons

Pros 4 Cons 3

Wide coverage (211 countries) and easy activation.

User-friendly app and website.

Works right after installation, no restart needed.

No artificial speed limits.

Prices are much higher than some competitors.

Setup is harder for beginners.

You cannot buy extra data after the package runs out without Wi-Fi.

Airalo eSIM in our hands

Go to Airalo website View full review

In the United States it roams on T-Mobile and Verizon, which is a good pair for the Bay Area coast, and starts at $4 for seven days of 1 GB. Change Plus plans add a US number, for example 10 GB for 30 days at $30. The San Francisco lesson from our reviews is about the toggle, not the network: one Airalo customer switched the eSIM line off on day two to use home Wi-Fi and lost a 3 GB plan for good.

Our Airalo review shows the full test; three alternatives to Airalo helps if the price grates.

Holafly for San Francisco: Unlimited Data, Two 2G-Speed Complaints

6.2 /10

Vefru score Good Score details

• Purchase process7/10
• Mobile app7/10
• eSIM installation9/10
• Customer support6/10
• Speed test4/10
• Prices4/10

Average of six categories from our own paid test.

Holafly is a leading Irish eSIM provider with truly unlimited data in more than 160 countries. However, if you only need a small amount of data, it can cost more than other options.

Key facts

• 160 countries
• iPhone app 4.8
• Android app 4.7
• Top-ups
• Hotspot 500 MB
• 4.5 GB/day cap

Pros and cons

Pros 4 Cons 4

Truly unlimited data in 160+ countries.

Very easy eSIM installation through the app.

Works right after installation, no restart needed.

Fast and helpful customer support.

Complicated purchase with a confusing Google Pay step.

Little transparency about fair use limits.

Hotspot is not available in all countries.

Higher prices if you only need a small amount of data.

Holafly eSIM in our hands

Go to Holafly website View full review

Two reviewers said their plan ran like 2G here and could not open Google Maps; one also described the connection as terrible across LA, Honolulu and SF, and a support bot looped instead of helping. Nationwide the record is much better, 273 positive out of 314. Tethering is limited to 1 GB a day, there is no US number, and a deleted profile cannot be restored.

Our Holafly review has the speed charts, and Airalo vs Holafly settles the usual comparison.

Nomad for San Francisco: Three Networks, the Most Divided Bay Area Reviews

6.8 /10

Vefru score Good Score details

• Purchase process8/10
• Mobile app7/10
• eSIM installation8/10
• Customer support2/10
• Speed test8/10
• Prices8/10

Average of six categories from our own paid test.

Nomad offers eSIM plans with coverage in more than 200 countries, a quality app with a data tracking widget and a fast, stable connection. Customer support is the weakest part of the service.

Key facts

• 200+ countries
• iPhone app 4.8
• Android app 4.5
• Top-ups
• Hotspot
• 2 GB/day cap

Pros and cons

Pros 4 Cons 3

Great app with a widget for data tracking.

Fast and stable connection (144 Mbps download).

Simple purchase process with Google Pay and PayPal.

Clean interface without unnecessary offers.

Problematic AI support with no way to reach a human agent.

App stops working when data runs out (no zero-rating).

Data usage display in the app and widget lags behind.

Nomad eSIM in our hands

Go to Nomad website View full review

The Bay Area is where its reviews split most. Positive ones mention good coverage in San Francisco, easy upgrades and a crystal-clear video conference from a Silicon Valley hotel. Negative ones are blunt: really bad service in the SF area, a terrible connection across LA, SF and Santa Cruz, and a family with no data along Highway 1 or downtown on a 19-day trip.

Read our Nomad review to see how the support test went.

Jetpac in San Francisco: The Cleanest Bay Area Report We Found

6.7 /10

Vefru score Good Score details

• Purchase process5/10
• Mobile app5/10
• eSIM installation9/10
• Customer support5/10
• Speed test8/10
• Prices8/10

Average of six categories from our own paid test.

Jetpac offers eSIM plans with coverage in 150 countries. It draws you in with good prices and bonuses, like airport lounge access when your flight is delayed, but the user interface is a weak point.

Key facts

• 150 countries
• iPhone app 4.0
• Android app 4.1
• Top-ups
• Hotspot
• Fair use cap

Pros and cons

Pros 4 Cons 4

Low price per GB and stable speeds.

Airport lounges and ExpressVPN for free.

Clever in-app calling feature.

Unlimited WhatsApp and Google Maps with packages over 3 GB.

Confusing interface on both the website and the app.

Slow support with technical answers.

No unlimited data plans.

App does not work without internet after data runs out.

Jetpac eSIM in our hands

Go to Jetpac website View full review

Jetpac is our San Francisco pick. One Bay Area traveler had an eSIM that would not work at first, got it fixed by quick, polite support within minutes, and then had good coverage for the whole trip. That fits the national picture: 64 positive reports out of 79, the third-best ratio in our matrix. Our own test scored it 6.67, with the price the main weakness.

Our Jetpac review covers the rest.

GigSky for San Francisco: Verizon Access and a Free Trial

7.2 /10

Vefru score Very good Score details

• Purchase process7/10
• Mobile app6/10
• eSIM installation8/10
• Customer support9/10
• Speed test6/10
• Prices7/10

Average of six categories from our own paid test.

GigSky offers eSIM plans with coverage in more than 200 countries. It stands out with connectivity on cruise ships and airplanes, but the app interface is a weak point.

Key facts

• 200+ countries
• iPhone app 4.5
• Android app 3.9
• Top-ups
• Hotspot
• Fair use cap

Pros and cons

Pros 4 Cons 4

Unique coverage on cruise ships and airplanes.

Works as a virtual operator with its own network.

App stays partly usable after data runs out.

Excellent customer support with quick responses.

You need the app to buy and manage the eSIM.

Less intuitive app interface.

Slower connection speeds in some locations.

Technical details like the ICCID are harder to find.

GigSky eSIM in our hands

Go to GigSky website View full review

GigSky scored 7.17 in our test, with support at 9/10 and the app at 6/10, and its US roaming partners are Verizon, T-Mobile, GCI in Alaska and Viaero. For the Bay Area that Verizon access is the draw, because Verizon holds up better on the coast road and in Marin than T-Mobile does. The free 100 MB, 7-day trial needs no card, so you can test the hills before paying.

See our GigSky review for the full coverage test.

Global YO for San Francisco: Cheapest Plan, Happy Bay Area Report

8.0 /10

Vefru score Excellent Score details

• Purchase process8/10
• Mobile app8/10
• eSIM installation9/10
• Customer support5/10
• Speed test8/10
• Prices10/10

Average of six categories from our own paid test.

Global YO offers eSIM plans with coverage in more than 200 countries. It stands out with very low prices and a modern app aimed at younger users, but customer support is weaker.

Key facts

• 200+ countries
• iPhone app 4.5
• Android app 3.8
• Top-ups
• Hotspot
• Local network speed

Pros and cons

Pros 4 Cons 3

Very low prices for data packages.

Smooth and quick eSIM installation.

Modern and stylish app.

Option to add calling for an extra fee.

Purchase only possible through the app.

Slower customer support.

App stops working when data runs out.

Global YO eSIM in our hands

Go to Global YO website View full review

Global YO is the usual price leader in our comparison tool and scored 8.00 in our test on a perfect price score and 9/10 installation, held back by 5/10 support. One customer used it happily in Hawaii, San Francisco and Florida. It runs on AT&T alone and is specified as 4G/LTE, and its unlimited plans give 1 GB a day before slowing.

The numbers behind that score are in our Global YO review.

Jetpac, Ubigi, ByteSIM and Others in San Francisco

Its unlimited plan gives 3 GB a day and lets WhatsApp, Uber and Google Maps keep running when your data is gone. Ubigi (T-Mobile only, 7-day unlimited $25 with a 25 GB cap) worked well for two Bay Area reviewers apart from one unexplained afternoon offline. ByteSIM (5.33) was mixed here: fine in the city, four bars and no data in Palo Alto, and one customer never received the promised phone number. GoMoWorld (8.17) posted the fastest speed in our test but has few US reviews to judge by, and Yesim (6.17) sells cheap promotions backed by weak support. Roamless (Verizon and AT&T, 43 of 47 positive) is a sensible coast-road alternative. All are priced in our US comparison tool.

Today's eSIM Plan Prices for San Francisco

The tables below draw live prices from our database, cheapest first, for the plan sizes Bay Area visitors buy. Every plan works in San Francisco, on the drive to Yosemite and across the United States.

2 GB covers a weekend of cable cars, ferries and a few maps, with hotel Wi-Fi in the evenings.

5 GB is a San Francisco week: Muni, Clipper, ride-hailing up the hills and photos from Twin Peaks.

10 GB adds a rental-car day trip to Yosemite or down Highway 1 with live maps running.

20 GB is the business-trip size, with video calls from a Silicon Valley hotel and a laptop on hotspot.

Unlimited plans suit daily video calls; Saily's 5 GB daily cap and free hotspot make it the one for the Valley.

Unlimited means a daily allowance at full speed, 1 GB at Global YO up to 5 GB at Saily, then 1 Mbps or less until midnight. On a Silicon Valley call day, 1 GB is gone in an hour of video. For a tourist week in the city a 5 GB fixed plan is cheaper and never throttles, and for the business traveler Saily's 5 GB cap is the one that holds.

Data Needs for a Bay Area Week or a Silicon Valley Business Trip

San Francisco is a walking and transit city, so daily use is moderate. Think maps, the Muni app or Clipper, ferry and museum tickets, ride-hailing up the steeper hills and a lot of photos from Twin Peaks and the bridge. Budget 0.7 GB a day, or about 5 GB for a week. Add 1 GB to 2 GB per day if you drive to Yosemite or down the coast with live maps.

Business travelers change the picture. A Nomad reviewer ran a video conference from a Silicon Valley hotel, and that alone can use 1 GB an hour. If you plan calls and a hotspot for a laptop, take 20 GB or an unlimited plan with a daily allowance of at least 3 GB. Hotel and office Wi-Fi in the Bay Area is generally fast, so use it for the heavy lifting.

Download offline maps for the city, Muir Woods and the coast road before you land, and let video apps use Wi-Fi only. Our data-saving tips for vacation list more tricks. For a figure tuned to your habits try the travel data calculator, or read what 2 GB, 5 GB and 10 GB actually cover.

Buying a Carrier Pass in San Francisco vs an eSIM from Home

San Francisco is T-Mobile and AT&T country and both have stores on Market Street, so buying a pass after landing is easy. T-Mobile's visitor product, the Prepaid US Pass eSIM introduced in May 2026, runs between $25 for 7 days and $35 for 14, with a 10-day option at $30, plus the city's 8.625% sales tax. It bundles unlimited calls and texts in the US, Canada and Mexico with unlimited 5G data, 50 GB of it at priority speed, and a hotspot allowance of 14 GB or more. Visible, the Verizon-owned prepaid brand, offers an eSIM Travel Pass at $25 for a week or $45 for a month.

Sales tax lands on top of every advertised price.

Our rule for San Francisco: under 5 GB a week the travel eSIM wins outright, with a 1 GB eSIM4Travel plan at $2.30. Above 10 GB, or the moment you need a US number for a building's text-message door code, the pass and the unlimited plans from Holafly, GigSky and Jetpac end up close on price, and with Saily's number add-on. Our eSIM vs SIM comparison works through the rest.

eSIM Data at No Charge on Arrival at SFO

SFO has free Wi-Fi, but for the BART ride into town you may want a little data without paying. New Roamless customers receive 500 MB free with their first purchase; the plan roams on Verizon and AT&T and 43 of its 47 US outcome reviews were positive.

GigSky offers a no-card trial eSIM carrying 100 MB free for 7 days, which is also the safest way to check that a company phone installs eSIM before a business trip. Our free eSIM guide has every no-cost option, and the US comparison tool lists free plans beside paid ones.

What Bay Area Reviewers Reported

Twenty reviews in our set name San Francisco, the Bay Area, Silicon Valley, Palo Alto or Yosemite, and they lean negative more than most cities. That is partly geography and partly the fact that people write when things go wrong. Read what follows as a set of warnings and confirmations, not a ranking.

Nomad is the most reviewed provider in the Bay Area and the most divided. Positive reports mention good, flexible coverage in San Francisco, easy upgrades, and a crystal-clear video conference from a Silicon Valley hotel. Negative ones are blunt: really bad service in the SF area, and a terrible connection in LA, SF and Santa Cruz that forced constant reconnects. One family had no connection along Highway 1 and in downtown San Francisco on a 19-day trip.

Holafly drew two San Francisco complaints. One traveler called the connection terrible across LA, Honolulu and San Francisco. Another said an eight-day unlimited plan advertised as 5G behaved like 2G, unable to open Google Maps, with a support bot that looped. Jetpac got the opposite: quick, polite support that fixed a non-working eSIM within minutes, and good coverage for the whole San Francisco trip.

Scroll up to the provider matrix, which tallies working and failing reports nationwide, and our eSIM customer support test shows who actually helps when your maps refuse to load on Market Street.

Getting Your eSIM Ready Before SFO

Do the installation at home on Wi-Fi, days before departure. All eight providers let you load the profile now and activate on arrival, and you want any problem solved with support while you still have a working connection, not on a BART platform.

1. Check the phone. eSIM hardware and a carrier unlock are both required; a locked phone is the single biggest cause of failure. Every model is in our list of phones with eSIM support; note that iPhones sold in mainland China, Hong Kong and Macau mostly have no eSIM.
2. Buy in order. Some plans start on their own if you wait too long after buying: Nomad after 60 days, eSIM4Travel after 90, Saily after 180. For a conference booked early, order Nomad last.
3. Install over Wi-Fi. Scan the QR code from the email or let the app do it, following our iPhone or Samsung guide. A bare activation code can be turned into a QR code.
4. Never delete, never toggle off. Holafly, Global YO, eSIM4Travel and Yesim install once only, and an Airalo user in SF lost a plan just by switching the line off. Saily, Nomad, GigSky, Roamless and Ubigi profiles can be reinstalled.
5. At SFO: turn the eSIM line on, give it Data Roaming, make it the active data line and switch off data on your home SIM. Nothing after a few minutes? Toggle airplane mode, then pick the network manually.
6. Still offline? Confirm the APN (Global YO's is globaldata, Jetpac lists US settings in its FAQ) and reach support over the airport Wi-Fi. The usual causes and fixes are in our eSIM troubleshooting guide.

Arriving at SFO: the airport has free Wi-Fi, and BART runs directly from the international terminal into the city. Your eSIM should connect in the terminal, and the BART ride crosses no tunnel until downtown, so you can troubleshoot on the way in. Two ByteSIM travelers had activation trouble on landing here, one without the promised phone number for a taxi, so have a backup way to reach your hotel. Leave the eSIM line switched on for the whole trip: an Airalo user lost theirs after toggling it off.

San Francisco eSIM FAQ

Final Word for San Francisco

San Francisco is awkward for roaming eSIMs, with hills, a tunnel under the bay and a coast road that goes dark. Jetpac has the cleanest local report and an 81% success rate across 79 US reviews. eSIM4Travel costs far less and adds Verizon on its three-network plan.

We would hesitate over Nomad and Holafly here, since travelers on both described maps that would not load. Download offline maps for BART and the coast, and compare live prices in our US eSIM comparison tool.