T-Mobile Scam Shield vs Who Called

T-Mobile Scam Shield provides call, text, and web protections for customers on T-Mobile’s network. Incoming calls T-Mobile identifies as likely scams can be labeled Scam Likely, helping customers decide whether to answer or block them. Scam Block can automatically block those calls and can be disabled at any time. Included anti-spam protection covers SMS and MMS, while Safe Web Browsing helps block known malicious or dangerous sites on supported devices and experiences. Calling a number on the Scam Likely list triggers an audible warning through Callback Protection. Network protections work automatically without the app; customers can manage ScamShield in T-Life, turn on Scam Block by dialing #662#, or use My T-Mobile or the T-Mobile app. ScamShield is available for Android and iOS. The free plan is free at no extra cost for T-Mobile customers with qualifying service and a capable device. ScamShield Premium is $4 a month per line and adds categorized call types sent to voicemail, reverse number lookup, and automatic voicemail transcription by text.

Who Called filters unwanted calls with an official telemarketer prefix list and community reports. Its Android and iOS apps can block risky numbers before the phone rings on Android, while uncertain numbers can ring with a warning. The website lets people check an unknown number’s reputation and report it. Reports can be submitted anonymously without an account. An optional SMS shield hides notifications from unwanted messages without storing or transmitting message content. The maker says the apps have no account, ads or third-party trackers, and that user data is not sold or shared. Personal blocking rules, settings and the local call-filter log stay on the device and are removed when the app is uninstalled. Lookups and reports send information to the service; lookups are not stored, while reports are retained for at most 365 days. The API is hosted in the European Union and uses HTTPS/TLS encryption. Who Called is open source, free at free, and support is offered by email in French or English.