Imagine a monthly cell bill of exactly $0. That's TextNow's promise: a cloud-based service that grew from a calling app into a full MVNO on T-Mobile's 5G network, with no contract, no credit check, and no monthly bill. But there's no free lunch: the service is ad-funded, and the data model has real limits. Here's the honest breakdown.
How TextNow works
Two ways in: use the app over Wi-Fi with a free number (no SIM at all), or buy the SIM (~$4.99 one-time) to get cellular service on T-Mobile's towers for $0/month. The base "Free Flex" plan covers unlimited talk, text, and "Essential Data" (enough for maps, rideshare, and email) funded by ads inside the app. You can also call and text from tablets and computers, which apps like WhatsApp can't match.
Data passes when you need speed
- Free Flex: $0: essential data only; maps, Uber, email, unlimited talk/text.
- Hour Pass: $0.99: 1GB for a quick heavy-data errand.
- Day Pass: $2.99: 2GB for a travel day.
- Monthly Pass: $35.99: 20GB for full-time primary-phone use, with Canada/Mexico roaming.
The add-ons worth knowing
Ad-Free Lite ($1.99/mo) trims ads to a small banner; Ad-Free+ ($9.99/mo) removes them entirely. The sleeper: Lock-In Number ($4.99/yr), without it, an unused number can be reassigned, which matters if banks and 2FA codes point at it. US and Canada calling is always free; international calls run on credits you can earn by watching ads.
Pros and cons
Pros: genuinely free calling and texting on a Big 3 network, pay-only-when-needed data passes, painless signup, broad T-Mobile coverage. Cons: the ads (that's the price), only two real data sizes, no video calling since 2022, and standard MVNO deprioritization plus fair-use throttling. Wi-Fi-first users will barely feel the limits; heavy cellular users will.
Verdict
TextNow is the best $0 phone bill available: a backup line, a kid's first phone, or a full plan for someone who lives on Wi-Fi. If you need consistent high-speed cellular data, a paid MVNO like Mint ($15) or Visible ($25) is the better primary line, but as free goes, nothing else touches it.
See every T-Mobile-network carrier ranked — from TextNow's $0 up through Mint and Metro.
Best T-Mobile MVNOs →A real US number with unlimited talk and text over Wi-Fi, free with ads.
See TextNow plans →Frequently asked questions
How is TextNow free? +
What network does TextNow use? +
Can TextNow be my main phone? +
Will I lose my TextNow number? +
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Jean Gilles has researched personal finance, consumer technology, and wireless pricing for over a decade. He founded ShopCellPlans in 2019 and writes every review on the site.