Annoying pop-up with add after each call

[Android Central Question]

I get these infuriating pop-ups with an ad after each call on my Samsung Galaxy S7 edge phone. It didn't when I first got it but it started after some update a few months ago. The pop-ups with each call show the number and call duration and a cartoon with a man's face on the right. I can send a picture.

The only certain way seems to be to force Google services to stop but it soon starts again.

Is there any way I can find and remove whatever app is causing this. It seems a retrograde step to go to a basic non-android phone but I may have to.

 

[methodman89]

Are you using the stock phone app?

 

[toad15]

Yes I'm using the standard phone app that came with the phone I've removed things like callerid+ and everything I can think of that might be responsible