Google Fi and US Mobile both appeal to people who manage their service online and want more than a one-size plan. Google Fi runs on T-Mobile (plus Wi-Fi) and is famous for working in 200+ countries. US Mobile lets you choose Verizon, Verizon Ultra Wideband, or T-Mobile, undercuts Fi on price, and includes taxes.
Quick answer
- Pick US Mobile for lower prices, network choice, taxes included, truly unlimited no-slowdown data (Premium $44), or the free 30-day trial.
- Pick Google Fi if you travel internationally a lot, data that just works in 200+ countries, or you’re deep in the Google/Pixel ecosystem.
| Google Fi | US Mobile | |
|---|---|---|
| Standard unlimited | Unlimited Standard: $50/mo | $25/mo, taxes included |
| Premium unlimited | Unlimited Premium: $65/mo, 100GB before deprioritization | Premium $44/mo monthly, $32.50 annual |
| Hotspot | 50GB on Premium, counted against the same allowance | Unlimited on Premium |
| Network | Primarily T-Mobile, with Wi-Fi handoff | Verizon, Verizon UW or T-Mobile, switchable by eSIM |
| Taxes | Charged on top | Included |
| Free trial | Not offered | 30 days |
| Multi-line | Narrows the price gap considerably | Flat per-line pricing |
Price: US Mobile wins clearly
For one line, US Mobile is dramatically cheaper: $25 standard unlimited vs Fi’s $50, and $44 truly-unlimited Premium vs Fi’s $65, with taxes included while Fi adds them. Fi’s per-line price drops sharply on family plans (Standard $25/line, Premium $40/line at 4 lines), narrowing the gap for larger households. Light users: US Mobile’s $8 (2GB) and $17.50 tiers vs Fi’s Flexible $20 + $10/GB.
International: Fi’s whole identity
Fi’s Unlimited Premium includes high-speed data in 200+ destinations at no extra cost — land, turn on your phone, it works. US Mobile handles international well (calling to 180+, eSIMs in 140+ countries, ~20GB roaming on Premium) but as features, not identity. Cross borders often → Fi; mostly call abroad from home → US Mobile is plenty.
Network and data
Fi runs primarily on T-Mobile with Wi-Fi handoff. US Mobile lets you choose Verizon, Verizon UW, or T-Mobile and switch by eSIM: an option Fi doesn’t offer. US Mobile Premium is truly unlimited, with unlimited hotspot on Dark Star (AT&T) and 50GB on Verizon or T-Mobile; Fi Premium gives 100GB high-speed with a 50GB hotspot plus YouTube Premium and 100GB Google One.
Frequently asked questions
Which is cheaper? +
Which is better for international travel? +
Which has truly unlimited data? +
Can I try either free? +
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Jean writes ShopCellPlans' reviews. He compares carrier plans using each carrier's own published prices, its FCC broadband labels and reporting from named outlets, and ranks them on the bill you actually get, taxes and fees included, not the price on the ad.