Hello everyone :) excuse me for creating a new thread but i couldnt find any info on this matter.
As a gift, my parents brought Samsung galaxy s4 from someone i dont trust who sells it. I factory reset the phone thinking its enough to clean everything. After a while i feel unsafe because the person knows things out of nowhere and i found out many $py software are more advanced now that its installed via root and very stealth.
I read wiping the partition and flashing the rom could help. But limited to only boot, data, cache, system while other such as /misc, /recovery remain the same?
What if its hidden in there. i want to make sure just to be safe. On a side note the person is a techie and also know im careful and observant.
Whats your suggestion on this?
Please help. Any inputs will be very much appreciated. :( Thank you in advance.