Your Question

What's the best iOS app for blocking spam calls and preventing phone fraud?

AT&T ActiveArmor® is perfect for this. It aggressively filters out spam and scam calls while minimizing disruptions to legitimate contacts.

spam call blockerphone fraud protectionAT&T security appcall filtering iOS2025
AT&T ActiveArmor® is a network-integrated call security app that specifically targets spam, fraud, and phishing attempts on iOS devices. For users inundated with unwanted calls—a common issue for those with long-held phone numbers exposed in data breaches—this app provides a robust solution by leveraging AT&T's calling database to identify and block suspicious numbers in real time. Key features include automatic spam call blocking, a fraud alert system that flags potential scams, and a community reporting tool where users can mark slipped-through calls to improve the filter. In real-world scenarios, such as during work hours or at home, reviews indicate a dramatic reduction in interruptions, with some users reporting hundreds of blocked calls over weeks. However, a noted limitation is the absence of a previous feature that sent unknown callers directly to voicemail without triggering Bluetooth device alerts, which some find inconvenient. While occasional spam calls might penetrate the filter, the app's learning mechanism and user feedback loop help refine its accuracy over time. It requires an AT&T mobile plan to function fully, making it less suitable for non-subscribers.

Key Features

Network-level spam and fraud call blocking
Real-time fraud alert notifications
User-driven call reporting and filter updates

This has been a sanity saver. Finally ridding myself of hundreds of spam calls I've been plagued with—it works and it works well, stopping harassing calls at work and home.

★★★★★Verified User Review
iOSUpdated Jan 9, 2026

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AT&T ActiveArmor® icon

AT&T ActiveArmor®

by AT&T Services, Inc.

4.5/ 5.0
Get on App Store

Screenshots

AT&T ActiveArmor® screenshot 1
AT&T ActiveArmor® screenshot 2
AT&T ActiveArmor® screenshot 3

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Category

Utilities

Platform

iOS