I'm really getting annoyed with an ad that I keep getting while trying to play scrabble (Classic Words Free) on my phone. It's a full screen ad that keeps appearing - possibly whenever I think for more than a few seconds of what my next word should be - telling me I've been selected to be a tester for the iphone6. (I really haven't looked at the details because I'm just not interested in what appears to be a scam or a trolling operation to give up my email address.)
I *really* want to block this ad - and, ideally, EVERY ad - and have already installed Ad Block Plus (with the accept unobtrusive ads option UNchecked). I also have Avast Mobile Security on the phone. Neither of these measures stops that bloody ad from appearing.
What else can I do?
I've only seen this obnoxious iphone6 ad in this one game but I don't use the phone that much so it's possible it will appear elsewhere. For the life of me, I don't know how to tell whether the app itself is obtaining the ad or whether it is appearing as a result of some setting in Android.
I've read that Android is supposed to be immune to viruses due to its design but I wonder if this could be a virus that some very clever spammer figured out? If so, how could I figure that out and remove this nonsense?
Avast reports only one problem: that I'm accepting code from unknown sources, which I had to enable to install Ad Block Plus. But I was getting the iphone ad for several days before I enabled unknown sources so I don't believe that is why I am seeing the ad.
My phone is an HTC Desire 320 running Android 4.4.2.