I'm having the same problem. It started yesterday. I was using the phone fine all day. I put it down for about an hour maybe, and next time I picked it up, and unlocked it, as soon as I unlocked it, a pop up from the Internet app, came up. I closed it, didn't think anything of it. Next time I locked, and unlocked my phone, it happened again, another pop up after I unlocked my phone. Now I have pop ups randomly coming up while I'm using my phone. It's a different pop up everytime. I haven't downloaded any new apps that could have caused this. The only thing I could think of, is that I wanted to charge my phone but didn't have my outlet charger, so I charged my phone thru USB port on my computer. And after that it seemed like this started. Besides reseting my phone is there anything we can do?? I have a Note 5 with Verizon.