Product info
San Francisco eSIM plans
| Unlimited data · 5 days | $17.99 | Buy eSIM |
| Ohayu recommendsUnlimited data · 10 days | $33.99 | Buy eSIM |
| Unlimited data · 15 days | $39.99 | Buy eSIM |
| 3GB prepaid eSIM · 14 days | $8.49$2.83 / GB | Buy eSIM |
| 5GB prepaid eSIM · 30 days | $13.49$2.70 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $21.49$2.15 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $27.79$1.85 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $34.49$1.72 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $73.49$1.47 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in United States. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for San Francisco?
SF weekend – 3 GB
Maps, Instagram, and rideshare apps over 3-4 days.
A week in the Bay Area – 10 GB
Maps, social media, video calls, and a day trip to Napa.
SF + LA + Vegas – 20 GB
California road trip. One eSIM covers all 50 states.
Remote work – Unlimited
Hotspot for your laptop from a café in the Mission or SOMA.
Coverage and network
Honest about coverage
United States mobile networks
The US ranks 10th globally for mobile download speed at 197 Mbps. San Francisco has strong 5G across most neighborhoods, though the city's hills and dense buildings can create occasional pockets of weaker signal. (Speedtest by Ookla, June 2026)
Speedtest Global Index · Mobile · United States · June 2026
Download
197.34 Mbps
Upload
10.35 Mbps
Latency
27 ms
Global rank
#10 of 98
Real San Francisco conditions
- Downtown & neighborhoods: Strong 5G across the Financial District, Mission, and most residential neighborhoods.
- BART & Muni: Coverage is available at most stations, but signal can drop in the tunnels under downtown and the Bay - normal for any carrier.
- Golden Gate & Marin headlands: Signal weakens on some hiking trails in the Marin headlands and parts of the bridge, but overall coverage across the city is solid.
One eSIM, the whole country
There's no such thing as a "San Francisco-only" eSIM - your plan works across the entire USA. Fly into SFO, then keep the same eSIM for the rest of your trip.
How to install eSIM
Connected in 3 steps
- 01
Buy before you fly
Choose your data plan before your trip.
- 02
Download & install
Log in to your account, tap your eSIM, and follow the on-screen instructions.
- 03
Land & activate
Activate when you arrive in United States. Turn on roaming for the eSIM and it connects to a local network.
Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.
Arriving in San Francisco
Free Wi-Fi in San Francisco
If you are reading this at the gate, sFO has free Wi-Fi across all terminals - connect and set it up before you catch BART into the city.
Side by side
San Francisco eSIM Comparison
Indicative comparison based on publicly listed USA plans as of July 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Where to buy a SIM card in San Francisco?
SFO has AT&T and T-Mobile kiosks in the international terminal. Airport prices run $35-60, above what you would pay at a Target or Best Buy in the city. A travel eSIM like Ohayu skips the counter - install before you fly and after landing it can connect you to supported networks like AT&T, T-Mobile, or Verizon.
Do US stores ask for ID for prepaid?
They have no need to. Prepaid lines are not registered to individuals anywhere in the US, and an eSIM bought online is checked no further than the payment. The FCC floated mandatory registration in 2026, but it remains a proposal.
Why isn't my eSIM working in San Francisco?
In the Muni Metro tunnels and out at Muir Woods, drops are expected. Otherwise look at which SIM is handling data. It needs to be Ohayu, with roaming allowed, followed by an Airplane mode toggle. Still stuck? chat and support@ohayu.com are open 24/7.
