Samsung Patent Could Block Spam Calls Before Galaxy Phones Ring

Samsung has patented a call-blocking system that could reject blocked calls before a Galaxy phone starts ringing.

The system checks an incoming phone number against the device’s blocked-number list at the IMS layer, which manages calls over modern mobile networks.

If the number matches the blocked list, the phone sends a rejection message before completing the normal call connection process. This means the screen would not light up, the ringtone would not play and the phone would not vibrate.

If the incoming number is not blocked, the call proceeds normally.

The approach differs from call blocking that takes place after the connection process has already started. Samsung’s patent instead handles the rejection earlier in the call signalling process.

The patent describes how the technology could work, but does not confirm when or whether Samsung will introduce it on Galaxy phones.