Sounds like the same garbage I had...
VERY annoying, irritating, aggravating to the point of really pissing me off, and I'm not one easily angered...
I resolved the popup problem by transferring all my contacts logs and other files back to my old phone using the Smart Switch app, then I did a factory reset and switched my files and contacts back to my Note5. I did not transfer any apps, as I did not know where the adware originated, but rather reinstalled non-native apps as needed.
I did this last Saturday, and so far I have not had a single popup ad...
In retrospect, after racking my brain for the last two weeks trying to figure out how my phone got infected, I suspect it happened on Facebook using the Facebook app, so that's one more app relegated to the disabled pile...
I remember getting the first popup that wanted me to download and install a "Wish Shopping" app, and I think I clicked on one of their advertised items just to look at it, but did not buy download or install anything... think I would have learned my lesson by now.
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