hi guys, i bought this phone for my dad a couple of months back, who by the way has never used a smartphone before.

It was running fine until he told me he can't whatsapp and browse. I'm working in KL and he's in another state. I went back recently and found out that the phone downloaded a SECURITY and I fiddled with it and somehow unblocked the data usage.

I'm away again and now he tells me it is blocked again. My bad I did not teach him what to do. But can you guys let me now how to permanently delete that shit?