Best cell phone plan for San Francisco
Part of California.
San Francisco's 7-by-7 mile geography hides a lot of variability: hills attenuate signal, Victorian and Edwardian flats have thick walls, the fog (yes, really) affects mmWave, and BART runs underground for the entire SF stretch. All three carriers are heavily built-out.
Where each network wins
- SoMa + FiDi + Mission Bay: T-Mobile 5g-mid-band">mid-band 5G fastest. Verizon close.
- Mission / Castro / Noe Valley: T-Mobile and Verizon tied.
- Inner Sunset / Inner Richmond: Verizon best in pre-war flats; T-Mobile fast above ground.
- Outer Sunset / Outer Richmond: Verizon strongest, especially closer to Ocean Beach.
- Pacific Heights / Marina / Cow Hollow: All three competitive; T-Mobile mid-band fastest.
- Hayes Valley / Lower Haight / Duboce Triangle: T-Mobile and Verizon tied.
- Twin Peaks / Diamond Heights: Verizon strongest in the higher elevations.
- Bayview / Hunters Point: Verizon strongest, AT&T close.
- BART tunnels (under Market through Embarcadero): T-Mobile and Verizon work continuously; AT&T close.
MVNO options
Xfinity Mobile (Comcast cable) and Spectrum Mobile (Charter) are both available depending on which side of the city you're in — both ride Verizon. T-Mobile MVNOs (Mint, US Mobile, Tello, Google Fi) work excellently across SF. Visible (Verizon) widely adopted.
Specific to San Francisco
For SoMa / Mission / Castro / FiDi residents who commute by Muni or bike, T-Mobile via Mint is the cheapest fast 5G. If you live in a Victorian or Edwardian flat in the Sunset, Richmond, or Pacific Heights, Verizon (or Xfinity Mobile riding it) penetrates older walls best. BART's underground SF stretch works on T-Mobile and Verizon both — pick by the rest of your daily geography.
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Frequently asked questions
- Which carrier has the best cell coverage in San Francisco?
There is no single best carrier for all of San Francisco — coverage varies meaningfully by neighborhood and by underlying network. Verizon is historically strongest in older brick housing and rural reach; T-Mobile leads in 5g-mid-band">mid-band 5G speed in dense urban areas (especially their 5G UC layer); AT&T is competitive throughout. The page above breaks down which network wins in each part of the city.
- What is the cheapest cell phone plan available in San Francisco?
The cheapest mainstream plans available in San Francisco are the same as anywhere else in the US — Tello starts at $5/month for 1GB on T-Mobile, Mint Mobile from $15/month, US Mobile from $10. Our plans index lists every plan we have on file with prices and underlying networks. The right "cheap" plan depends on which underlying network has the best coverage at your address.
- How do I check cell coverage at my exact address in San Francisco?
Enter your ZIP in the finder above to see strong/fair/poor/none coverage classification for the underlying networks at your specific address. Our data comes from the FCC's public Broadband Data Collection — the same dataset most coverage tools rely on. You can also visit a specific carrier's own coverage tool for street-level certainty.
- Are MVNO plans good in San Francisco?
MVNOs in San Francisco have the same coverage as the underlying MNO they ride — Mint Mobile (T-Mobile), Visible (Verizon), Cricket (AT&T) all use their parent network's towers. The tradeoff is deprioritization during congestion: at packed venues or rush-hour towers, postpaid customers are served first. For most everyday use in San Francisco, the experience is indistinguishable from postpaid at half the price.
- Does San Francisco get 5G coverage?
Yes — all three major networks (Verizon, T-Mobile, AT&T) offer 5G in San Francisco. The relevant question is which 5G layer: low-band 5G is broad but slow (similar to LTE speeds), mid-band 5G is the fast workhorse (200-700 Mbps), and mmWave is gigabit-class but only in dense urban cores and stadiums. Use our metro coverage maps to see which layer is lit up at your address.