Even without Call Guardian, US Cellular customers can dial * to enable a basic “Selective Call Acceptance” feature (allows only numbers in a pre-set list), though this is less common today.

Call Guardian relies on a massive database of known spam numbers. When a call comes in, the system checks the number against this database in real-time.

While every major carrier now offers some form of protection, UScellular’s approach combines passive network security with active user-controlled tools to identify and silence spam. 1. Automatic Network-Level Blocking

The short answer is . US Cellular offers specific tools to help combat this epidemic, though the level of protection depends on your device and plan.

This is the most important detail for many users. US Cellular offers Call Guardian in two tiers:

This feature helps block "neighborhood spoofing," where scammers use local area codes to trick you into answering.