I've been using an Android phone for 4 years (Nexus 5, LG G3, LG G4) and I recently swap to an iPhone.
Yesterday, a friend tweeted 2 photos of an ad when he was trying to read an article about a keyboard:
Then, I remembered that I had that kind of ad when I was using Android with Google Chrome on mutiple websites. I've never get this on Google Chrome Desktop neither on Safari iOS.
I didn't find anything on internet about that and I think this is an Android problem, does someone have it too? Do you know what is the problem (is it an adware)? Do you have a solution?