Pop up adds while typing text messages

[Android Central Question]

I'm using Android 6.0, and when I am typing a text I get pop-up ads. Why? It's only been happening the past few weeks.

 

[ManiacJoe]

You have adware on your phone.
What were the last five apps you installed?

"Free" apps are not always free.

 

[Mike Manwell]

Wow, thank you or your response.
There really isn't anything I've added in the last week which is when this started.
I have downloaded some apps and then uninstalled them. Would that leave behind some adware?