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How to screen calls on an Android phone
Avoid unwanted callers from ruining your day.
As a result, Google and the other Android phone makers have gradually added a range of built-in features to detect and deal with unwanted callers. Google says it “gathers various signals about the call” during the check — which I presume means cross-referencing it against a database of numbers that have been reported as spam. Outside of the US, you only get the Save Call Screen audio and Automatically delete older recordings and transcripts toggle switches.
Or read this on The Verge
