I was getting many adds, very dark, sometimes couldn't tell if the phone was on. Replaced and disabled browsers. Downloaded add protectors no help. Finally, traced it to a compass that I had downloaded. A mostly dark compass. I then downloaded a different compass- a while compass. The adds - adchoice- started coming in again, now white easy to see adds. No more compasses for me. So, if you are getting Adchoice, look at the compass.