I'm about to go to iPhone... this is ridiculously annoying. Anyone from Samsung want to figure this out? I've had the 1, 3, 5, 7 and now the 9... I've never had this issue before.
What troubleshooting steps have you tried from this thread? @userZFJX22RPe
I couldnt work out which app was causing it for me tried deleting a few which no change...it appeared to be linked to google for me but dont know how. Anyway put in safe mode and wasnt there so figured prob wasnt google so tried pressing top left as suggested to work out which app it was linked to and it came up with disable ads so pressed that and they're all gone. Not sure if this only occurred cause I'd deleted the app causing it but it's gone and I have since re-downloaded the same apps and still have no ads. Hope helps Goodluck
@useroiUCih1rMF; Glad we could help!
@userZ6F9VEpCXP: In order to boot the device into Safe Mode, please follow these steps.
Personally. ... I had to delete apps and still had the issue until I hunted down the residual files some of the apps left behind and delete them. I don't have any pop up adds now. Maybe I just got lucky but at least they're gone. I also used some cleaners to help with the process of finding the residual files and empty folders.