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Head-to-head · Spam Call Blocking Apps

Truecaller vs T-Mobile Scam Shield

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Truecaller #1 in Spam Call Blocking Apps 9.3/10 Free plan Free plan✓ 4 of 4 features Visit Truecaller
T-Mobile Scam Shield #2 in Spam Call Blocking Apps 9.1/10 Free plan Free plan✓ 2 of 4 features Visit T-Mobile

Truecaller leads on 0 checks, T-Mobile Scam Shield on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreTruecaller · 9.3/10
  • Free planboth
  • Most featuresTruecaller · 4 of 4

Truecaller scores higher on our rubric for spam call blocking apps: 9.3 against 9.1 out of 10; our editors rank them #1 and #2.

Truecaller is the better fit for established caller ID and spam protection. T-Mobile Scam Shield is the better fit for T-Mobile customers wanting carrier-integrated protection.

  • Truecaller fits best

    Established caller ID and spam protection

  • T-Mobile Scam Shield fits best

    T-Mobile customers wanting carrier-integrated protection

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Side by side

Feature Truecaller 9.3/10 Visit ↗ T-Mobile Scam Shield 9.1/10 Visit ↗
At a glance
Editor score 9.3 9.1
Ranking #1 in Spam Call Blocking Apps #2 in Spam Call Blocking Apps
Best for Established caller ID and spam protection T-Mobile customers wanting carrier-integrated protection
Pricing model Free plan + paid Free plan + paid
Starting price $74.99/yr —
Free plan ✓ ✓
Free trial — —
Deployment Mobile Cloud, Mobile
Platforms iOS, Android iOS, Android
Support Live chat, Docs Docs
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Truecaller 4/4 · T-Mobile Scam Shield 2/4
Robocall blocking ✓ ✓
Caller ID ✓ ✓
Call screening ✓ (best) Not checked yet
Community reports ✓ (best) Not checked yet
Specs
Supported platforms Both Both
Blocked-number limit Not checked yet Not checked yet
Our review
Pros
  • Identifies callers and blocks spam, robocalls, scams, and telemarketing
  • Adds call screening, reverse lookup, SMS protection, and custom block lists
  • Available on iOS and Android with community-based spam reporting
  • Free Scam Likely identification and automatic Scam Block
  • Blocks spam texts and sends unwanted calls to voicemail
  • Premium adds category blocking and reverse number lookup
Cons
  • Paid plans start at $74.99 per year with annual billing
  • Feature and availability differences may apply by device, country, or carrier
  • Some advanced features require a paid plan
  • Requires qualifying T-Mobile service and a capable device
  • Premium costs $4 per line per month
  • Some features depend on supported devices or account eligibility
Our verdict

Truecaller is a mobile communication app for identifying incoming callers, searching unknown numbers, and detecting or blocking spam calls, robocalls, scams, and telemarketing. It suits people who want caller ID and unwanted-call…

Read the review →

T-Mobile Scam Shield is a network-based scam protection service for eligible T-Mobile customers. It identifies Scam Likely and Potential Spam calls, can automatically block suspected scam calls, sends unwanted calls to voicemail, blocks…

Read the review →
  1. TruecallerSpam Call Blocking Apps 9.3Free plan
  2. T-Mobile Scam ShieldSpam Call Blocking Apps 9.1Free plan

Strengths and trade-offs

  • Truecaller — where it wins

    • Identifies callers and blocks spam, robocalls, scams, and telemarketing
    • Adds call screening, reverse lookup, SMS protection, and custom block lists
    • Available on iOS and Android with community-based spam reporting

    Where it doesn't

    • Paid plans start at $74.99 per year with annual billing
    • Feature and availability differences may apply by device, country, or carrier
    • Some advanced features require a paid plan

  • T-Mobile Scam Shield — where it wins

    • Free Scam Likely identification and automatic Scam Block
    • Blocks spam texts and sends unwanted calls to voicemail
    • Premium adds category blocking and reverse number lookup

    Where it doesn't

    • Requires qualifying T-Mobile service and a capable device
    • Premium costs $4 per line per month
    • Some features depend on supported devices or account eligibility

More comparisons

All spam call blocking apps comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update