Thanks Man For Sharing Nice Information With Us
Read how malicious advertising is about to hit a lot of Android phones at http://www.tomsguide.com/us/malvertising-lock-android-phones,news-25255.html
To stop this disaster happening, you only have to check and change one setting. It's in the Settings app. On my phone (LG G4) it's in Settings->Security->Allow Third Party apps. To block this threat I have it turned off or disabled.
"Uninstalling the app is impossible, since "update" controls the device at an administrative level. Any attempt to get rid of it forces the phone into a lock screen, and at the time of writing, there's no way around it. Your only recourse is to perform a factory reset on the phone. Depending on how much data you have saved on your device, this could range from inconvenient to disastrous."
No one wants to see their phone locked like this. Yes, you can factory reset to get rid of it. I'll update if I find another solution.

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