T-Mobile Scam Shield — free setup
T-Mobile's Scam Shield free tier is the most generous of the big three carriers. Two minutes of setup turns your line from labeled to locked.
What the free tier gives you
- Scam ID — calls T-Mobile's network flags as likely scams show up labeled "Scam Likely." On by default for everyone.
- Scam Block — the upgrade most people never enable: "Scam Likely" calls get blocked at the network and never reach your phone at all.
- Free caller ID — names on incoming calls where T-Mobile knows them.
Set it up
- Install the T-Mobile Scam Shield app and sign in.
- Toggle on Scam Block. That's the whole trick — ID labels, Block removes.
- No app? Dial #662# from your T-Mobile phone and tap call — Scam Block turns on network-side. (#632# turns it off.)
Scam Shield Premium (paid) adds category blocking (telemarketers, surveys), reverse number lookup, and voicemail-to-text. Worth it only if you want the category controls; check T-Mobile for current pricing.
Honest verdict
Scam Block is the single best free carrier setting in the US — flip it on today. Its blind spot is the same as AT&T's and Verizon's: it blocks numbers and patterns the network has already scored as scams. A fresh number with clean attestation rings through labeled as nothing at all. And Scam Shield's answer to a suspicious-but-not-certain call is to let it ring with a label — the interruption still lands on you. Close the last gap with conversational screening: Spam Slayer picks up the unknowns, verifies humans in two exchanges, and hands the boiler rooms to the crew. Pair with your iPhone or Android settings for the full stack.