HelloRoam offers prepaid eSIM data plans for San Francisco from £2.14 a day. Your e SIM connects to local 4G/5G networks the moment you land. Activate by QR code in under two minutes, with no shop visit required. Keep your EE, Vodafone, or Three number live on dual SIM while your e-sim handles data abroad.
- Mobile networks
212+- 5G support
5G- Setup
under two minutes
Last updated
Your San Francisco eSIM with local network coverage
Cheap eSIM for San Francisco, starting from £2.14. Local 4G/5G data on top carrier networks in San Francisco. Works on all eSIM compatible phones. SFO kiosk queues are the last thing you want after a long transatlantic flight. A HelloRoam eSIM for San Francisco activates before you leave the UK, starting from £2.14 on Verizon and AT&T 5G with strong coverage across the Mission, SOMA, the Embarcadero, and Golden Gate Park. Scan the QR at home and your data is live before you reach the BART platform. No physical card, no contract, no fuss. Choosing an eSIM San Francisco from HelloRoam means instant QR delivery, no contract, and local network speeds from the moment you land.
San Francisco eSIM with fast 5G coverage
San Francisco is one of the USA's most beloved cities for British travellers, home to the Golden Gate Bridge, Alcatraz, and the cable cars. Direct flights from London Heathrow on British Airways and United take around ten and a half hours. T-Mobile, AT&T, and Verizon provide 5G across the city and San Francisco International Airport. A HelloRoam USA eSIM connects you on arrival. Plans start at £2.14.
- Plans start at £2.14 with 5G speeds
- Coverage from Verizon and 1+ other operators
- Instant activation in under 2 minutes
- 180-day money-back guarantee
- San Francisco coverage across major cities
- Network
- 5G
- Plans From
- £2.14
- Activation
- Under 2 min
- Guarantee
- 180 days
How to Set Up an eSIM in San Francisco
Follow these steps to get your eSIM sorted on iPhone or Android before your holiday. Works for any eSIM for international travel, no replacement SIM, no shop visit.
Set up an eSIM on your iPhone for travel from the UK
Set up an eSIM on your Android for travel from the UK
- 1
Choose your plan and checkout online
Choose a data plan for your destination and complete your purchase in GBP.
2Scan the QR code
Scan the QR code to install your eSIM straight away.
- 3
Activate in minutes: ready on arrival
Your eSIM installs instantly and activates when you land.
4Manage it all from our mobile app
Track usage, top up data, and manage all your eSIMs in one place.
Holiday changed? Not to worry, your money is safe.
Plans change. With HelloRoam, you can request a full refund on any unused eSIM plan within 180 days of purchase. No questions asked if the eSIM has not been activated.
Learn more about our refund policyHelloRoam San Francisco eSIM vs EE, Vodafone and Three roaming
When comparing eSIM vs a travel SIM card for San Francisco, HelloRoam wins on price. EE charges £6/day on their Roam Abroad Pass, Vodafone charges £6.85/day on Xtra roaming, and Three Go Roam applies fair-use data caps. Skip the airport SIM kiosk and get the cheapest eSIM deal from £2.14 with instant QR activation.
| Feature comparison | HelloRoam | UK carrier roaming add-on | Budget eSIM |
|---|---|---|---|
| 180-day refund policy |  Feature available |  Feature not available | Feature not available |
| Round-the-clock live chat | Feature available |  Feature available | Feature available |
| £0 activation fees | Feature available | Feature not available | Feature available |
| Automatic data-usage alerts | Feature available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature not available | Feature available |
| Premium San Francisco carrier networks | Feature available | Feature not available | Feature not available |
Why UK Travellers Pick HelloRoam e-sim for San Francisco
Round-the-clock live chat support
HelloRoam support is available 24/7 via live chat, WhatsApp, and email. A real person responds in under five minutes, whether you are setting up before a Heathrow flight or troubleshooting on holiday. That kind of round-the-clock access to mobile data help is hard to find from any other travel eSIM provider.
Best eSIM for San Francisco
Connect to local 4G/5G networks on local carriers the moment you land in San Francisco. Buy your plan, scan the QR code, and get online without paying EE, Vodafone, or Three roaming fees. A prepaid data package for your destination costs a fraction of standard carrier daily charges.
Dual SIM ready
Keep your UK mobile number active for calls and texts on your main SIM. HelloRoam runs travel data on a second eSIM line on any dual SIM compatible phone. No need to choose between your EE or Vodafone line and your holiday data. Your wireless connectivity abroad stays separate from your home plan, so there are no bill surprises when you return.
212+ carrier networks including San Francisco
HelloRoam eSIM connects to 212+ carrier networks across 185+ countries. Your phone picks the strongest 4G/5G signal in San Francisco with no manual carrier selection needed. That breadth of network access means consistent cellular coverage whether you are in a city centre or a quieter coastal area.
Data alerts before you run out
HelloRoam sends an alert when you reach 80% of your data allowance. Top up from your account dashboard in seconds. A pay as you go eSIM with no contracts and no surprise bills on holiday. Managing your internet abroad this way keeps costs clear and predictable from start to finish.
Local network speeds in San Francisco
HelloRoam eSIM connects to local 4G/5G networks in San Francisco at local data prices. You get fast speeds for navigation, video calls, and streaming without paying EE or Vodafone daily roaming rates. Local network speeds through a travel eSIM are the same as what residents get, giving you a reliable connection throughout your trip.
Global and regional plans
Visiting more than one country? HelloRoam regional eSIMs cover the EU, Asia, the Americas, and 185+ destinations in a single purchase. Unlimited data plans work for longer holidays. One QR code, no border hassle. A single regional plan gives you mobile data and wireless connectivity across multiple countries without ever swapping a physical SIM card.
Hotspot and data sharing in San Francisco
Share your San Francisco eSIM data with a laptop or tablet using your phone's mobile hotspot. No extra charges and no separate setup needed. Works on all eSIM compatible phones with data sharing enabled. It is a practical way to keep a travel companion or work device running on the same prepaid data package at no added cost.
eSIM Prices for San Francisco
HelloRoam, the best eSIM San Francisco. Compare plans from 1 to 30 days and pick the right data for your trip.
| Number of days | Price |
|---|---|
| 1 day | £2.60 |
| 3 days | £7.42 |
| 7 days | £16.03 |
| 15 days | £31.23 |
| 22 days | £42.37 |
| 30 days | £53.10 |
HelloRoam vs Other eSIM Providers for San Francisco
HelloRoam eSIM reviews from UK travellers highlight the 180-day refund policy, no activation fees, and round-the-clock live support. See how HelloRoam compares to Airalo, Holafly, Saily, and other eSIM providers for your San Francisco holiday.
| Feature comparison | HelloRoam | Airalo | Holafly | Nomad | Saily | Ubigi |
|---|---|---|---|---|---|---|
| 180-day refund policy | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| 24/7 live chat support | Feature available | Feature available | Feature available | Feature not available | Feature available | Feature available |
| £0 activation fees | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Automatic data-usage alerts | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| No data overage charges | Feature available | Feature not available | Feature available | Feature not available | Feature not available | Feature not available |
| Instant QR code delivery | Feature available | Feature available | Feature available | Feature available | Feature available | Feature available |
| Premium San Francisco carrier networks | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature not available |
| Own branded carrier identity (SPN) | Feature available | Feature not available | Feature not available | Feature not available | Feature not available | Feature available |
What Is an e SIM? How eSIM Works in San Francisco
An eSIM card is a digital SIM built into your phone. There is no plastic chip and no SIM tray to open. Scan a QR code to activate your e SIM in under two minutes on any eSIM compatible iPhone or Android. It works as a prepaid international data plan for San Francisco travel with no airport SIM shop queue, no replacement SIM card, and no carrier contract. Mobile data through an eSIM connects to local in-country networks, giving you the same wireless connectivity as a resident rather than a roaming tourist. Follow the step-by-step setup guide to get connected before your flight from Heathrow, Gatwick, or any UK airport. guide
San Francisco eSIM coverage guide for UK travellers
San Francisco has excellent 5G across downtown, the Golden Gate Bridge, Fisherman's Wharf, Alcatraz, and SFO Airport. Your HelloRoam eSIM connects to T-Mobile, AT&T, or Verizon on arrival.
- HelloRoam connects to Verizon 5G, AT&T 5G in San Francisco
- 5G across downtown, Golden Gate Bridge, Fisherman's Wharf, and all main areas
- San Francisco International Airport fully covered
- Plans from £2.14 cover all 50 states
eSIM Travel Tips for San Francisco
Install your eSIM before your British Airways or United flight
British Airways and United fly direct from London Heathrow to San Francisco. Install your HelloRoam USA eSIM at home. Connect at SFO on arrival.
Book Alcatraz tickets well in advance
Alcatraz ferry tickets sell out weeks ahead, especially for the evening tour. Book at alcatrazcruises.com before you travel.
Take BART from SFO to downtown
The BART (Bay Area Rapid Transit) train connects SFO to the city centre in around 30 minutes. Buy a Clipper card at the airport. Your HelloRoam eSIM keeps transit apps live.
Keep your UK SIM for banking
British banks send SMS verification codes for overseas transactions. Keep your UK SIM active alongside your HelloRoam eSIM.
Data from £2.14 covers all 50 states
A HelloRoam USA eSIM covers San Francisco, Los Angeles, Las Vegas, and the whole country. Plans start from £2.14.
San Francisco mobile network coverage for British travellers
San Francisco has strong 5G and 4G LTE coverage across the city. T-Mobile, AT&T, and Verizon all operate 5G networks. San Francisco International Airport (SFO) has full 5G and 4G coverage. Downtown, the Financial District, Union Square, Fisherman's Wharf, Pier 39, Chinatown, Haight-Ashbury, the Mission, Castro, Nob Hill, and all main tourist areas have reliable signal. The Golden Gate Bridge has strong outdoor signal on the bridge deck. Marin Headlands and Alcatraz island have solid 4G coverage.
- Verizon
- 5G
- AT&T
- 5G
San Francisco eSIM vs local SIM vs UK carrier roaming
The USA is outside any UK roaming zone. UK carriers charge daily fees for US travel. A HelloRoam USA eSIM gives a fixed prepaid allowance.
| Category | HelloRoam eSIM Recommended | US prepaid SIM card | UK carrier roaming |
|---|---|---|---|
| Typical cost | From £2.14 total | £3.73–£18.64 total | £3.73–£11.19/day |
| Details | From £2.14. Install at home, connect at SFO on arrival. No SIM purchase needed. | US prepaid SIMs are available at SFO. They require activation time and can be more expensive for short trips. | UK carriers charge daily fees for the USA. A two-week San Francisco trip with daily roaming adds significantly to your bill. |
Prices approximate as of . Actual savings vary.
Best time to visit San Francisco from the UK
September and October are the best months for British visitors. San Francisco's Indian summer brings warm, clear days at 18C to 24C. June is June Gloom with morning fog. July and August are actually cooler in San Francisco at 15C to 20C due to coastal fog. November through March is mild at 10C to 15C with rain. The city is busy year-round.
Top Attractions in San Francisco
Alcatraz
Alcatraz was a federal prison on an island in San Francisco Bay from 1934 to 1963. Use HelloRoam eSIM to stay connected.
Book night tour tickets for the most atmospheric prison experience.
Golden Gate Bridge
The Golden Gate Bridge is San Francisco's 2.7 km red suspension bridge from 1937. Use HelloRoam eSIM to stay connected.
Walk or bike the bridge from the south side for city skyline views.
Lombard Street
Lombard Street in San Francisco has eight steep hairpin turns lined with flowers. Use HelloRoam eSIM to stay connected.
Walk down the steps on the side instead of driving for better photos.
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Reviews
HelloRoam eSIM Reviews from UK Travellers
Real reviews from Trustpilot and the App Store, quoted as written.
40k+ travellers have used HelloRoam
Cat
On a trip to Europe, my hotel Wi-Fi was so slow and outside Wi-Fi was unreliable. I couldn’t take it anymore so I got helloroam for a few days. It was tricky to set up correctly because of the primary settings (with my original number). But I reached out to their customer service via WhatsApp. Super responsive and helpful, with specific and clear steps to troubleshoot. Appreciate having 4G roaming instead of being stuck with in and out Wi-Fi during my trip!!
Rated 5 out of 5 by this reviewer
Very good experience! The eSIM was easy to set up and worked great in London. It was much cheaper than it would have been to use my own operator there.
Ilona
Rated 5 out of 5 by this reviewer
metulker
Hard to set up but help was good
Rated 5 out of 5 by this reviewer
Reuben
Really happy with HelloRoam. Everything worked as expected, from messaging and Google Maps through to streaming without any issues. Easy to use, reliable and affordable. Would happily use them again when travelling.
Rated 5 out of 5 by this reviewer
Angeline
Reliable connection. Reasonable pricing.
Rated 4 out of 5 by this reviewer
Last updated
Common Questions About San Francisco eSIM
What does an eSIM for San Francisco cost for British travellers?
An eSIM in San Francisco covers the full Bay Area on Verizon and AT&T 5G networks from SFO Airport across to Fisherman's Wharf and the Castro. HelloRoam plans start from £2.14 with QR activation before your flight from the UK. No contract on any plan.
How does an eSIM in San Francisco compare to buying at the airport?
An eSIM San Francisco plan from HelloRoam activates before departure and gives you live data from the moment you land at SFO, covering Union Square, the Castro, and all BART stops. Plans start from £2.14 with instant QR delivery. No airport kiosk visit and no roaming fees on your UK bill when you return home.
Does a HelloRoam San Francisco eSIM cover BART, the cable cars, and Alcatraz ferry?
A HelloRoam United States plan runs on Verizon and AT&T 5G across San Francisco, covering BART above-ground and underground sections, the Fisherman's Wharf ferry pier to Alcatraz, and the Powell-Hyde cable car route. Plans start from £2.14 with instant QR delivery and a 180-day refund guarantee for unactivated eSIMs.
Can I use a HelloRoam San Francisco eSIM on a drive down to Monterey and Big Sur?
A HelloRoam US plan works nationwide on Verizon and AT&T 5G, so your data follows Highway 1 south from San Francisco through Half Moon Bay, Santa Cruz, Monterey, and the Big Sur coastline. Plans start from £2.14 with no contract. Cliff-side sections may have intermittent signal.
Does eSIM work in San Francisco?
A HelloRoam USA eSIM works in San Francisco on T-Mobile, AT&T, and Verizon 5G networks. Coverage is excellent across all tourist areas and SFO Airport. HelloRoam eSIM for San Francisco connects to T-Mobile / AT&T with 5G coverage across major tourist and urban areas. Plans start from £2.14. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Is there a prepaid SIM card for San Francisco?
US prepaid SIM cards are available in San Francisco. A HelloRoam USA eSIM is more convenient: install at home, connect at SFO on arrival, no activation needed. HelloRoam eSIM for San Francisco connects to T-Mobile / AT&T with 5G coverage across major tourist and urban areas. Plans start from £2.14. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Does my eSIM work at San Francisco Airport?
Yes. San Francisco International Airport (SFO) has full 5G and 4G LTE coverage. Your HelloRoam eSIM connects on arrival. The airport has full 5G coverage across all terminals. Activate your data in Settings when you land and HelloRoam connects automatically to T-Mobile / AT&T. No queue, no SIM counter: you are online within seconds of landing.
Is the USA outside the UK's roaming zone?
Yes. The USA has no roaming agreement with UK carriers. A HelloRoam eSIM avoids daily UK carrier charges. HelloRoam eSIM for San Francisco connects to T-Mobile / AT&T with 5G coverage across major tourist and urban areas. Plans start from £2.14. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Is there signal at the Golden Gate Bridge?
Yes. The Golden Gate Bridge deck, both bridge towers, Crissy Field, and the Marin Headlands viewpoints all have strong outdoor 5G and 4G coverage. Outdoor areas and main tourist zones have strong 5G signal from T-Mobile / AT&T. Large indoor venues or underground spaces may have slightly weaker coverage. HelloRoam eSIM automatically connects to the strongest available signal.
Is there signal at Alcatraz Island?
Yes. Alcatraz Island has solid outdoor 4G coverage. The ferry crossing has signal throughout the short bay crossing. Outdoor areas and main tourist zones have strong 5G signal from T-Mobile / AT&T. Large indoor venues or underground spaces may have slightly weaker coverage. HelloRoam eSIM automatically connects to the strongest available signal.
Is there signal at Fisherman's Wharf?
Yes. Fisherman's Wharf, Pier 39, and the surrounding North Beach and Embarcadero waterfront all have strong outdoor 5G coverage. Outdoor areas and main tourist zones have strong 5G signal from T-Mobile / AT&T. Large indoor venues or underground spaces may have slightly weaker coverage. HelloRoam eSIM automatically connects to the strongest available signal.
Does eSIM cover the rest of the USA?
Yes. A HelloRoam USA eSIM covers all 50 states including California, Nevada, New York, and the whole country. HelloRoam eSIM for San Francisco connects to T-Mobile / AT&T with 5G coverage across major tourist and urban areas. Plans start from £2.14. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Is there signal in the Castro and Haight-Ashbury?
Yes. The Castro, Haight-Ashbury, the Mission, and all San Francisco neighbourhoods have solid outdoor 5G and 4G coverage. Outdoor areas and main tourist zones have strong 5G signal from T-Mobile / AT&T. Large indoor venues or underground spaces may have slightly weaker coverage. HelloRoam eSIM automatically connects to the strongest available signal.
What currency does the USA use?
The USA uses the US dollar (USD). Cards are accepted everywhere in San Francisco. HelloRoam eSIM for San Francisco connects to T-Mobile / AT&T with 5G coverage across major tourist and urban areas. Plans start from £2.14. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
Can I use Uber in San Francisco?
Yes. Uber and Lyft both operate in San Francisco. With your HelloRoam eSIM active from SFO, you can book from arrivals. HelloRoam eSIM for San Francisco connects to T-Mobile / AT&T with 5G coverage across major tourist and urban areas. Plans start from £2.14. Activate by scanning a QR code before departure. No physical SIM card or airport queue needed.
