Why is the history of the phone I sold still showing up in my history?

[Android Central Question]

I currently have a samsung j5 but before that i had a samsung ace3. I sold the ace to a phone shop. I have recently noticed that in my history activity it still shows the ace3's history for some things. Why is this?

 

[chanchan05]

You probably didn't log out of it, and the other user didn't as well.