Poku is CORRECT -

older versions did support it, and it DID work (I have an older Motorola Photon on which Avast will survive a factory reset to this day)

A full ROM flash it may not, but this is not the question here.

Avast used to install itself in the boot partition for ROOTED phones, this option was displayed ONLY on ROOTED phones.

Eddy, get your act together and stop being rude to newbies. …