This article shows you how to remove lock-screen-type ransomware using Safe Mode on your Android device.

A lock-screen-type ransomware blocks your home screen, making your phone inaccessible until you pay up the "ransom".
 
"Safe Mode" is displayed on the lower-left corner of the screen. When in Safe Mode, Android does not load any third-party apps where you can uninstall stubborn applications causing these problems.