Why has my phone changed the way it looks when someone calls me?

[jkb22]

When someone calls me, the screen stays black but showing their name and phone number and there are lights that go around the screen. Also, it wont let me answer the call until it almost hangs up.

 

[Laura Knotek]

What phone do you have? What carrier do you have? What version of Android is your phone running? Are you using the stock phone dialler app or a different one? If it's different, which is it?

 

[Javier P]

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https://forums.androidcentral.com/showthread.php?t=840621