Ransom virus popped up on kid's phone (yeah, I know)...Samsung Axiom running Android 4.1.2. None of the tactics found online work. Avast does not open. Tried installing Malwarebytes...installed, but unable to open through play store. I tried hooking it up to a pc with Malwarebytes, but the program won't let me scan the phone.
I need ideas. Please help.