.....should reset everything in the phone and would remove any installed applications that might be spying on the phone.
Because it has happened here. A person known to my boyfriend from a past life ran into us at a bar (that I checked into on Facebook and tagged him) - asked to borrow his phone because hers was dead...
In the following days we found that the number this person dialed a strange number that seemed to be international, found several entries in the data with the prefix awdd - these are not on my phone. She had sent him a pic with data on it as well.
Here's the question, does resting to factory take care of this, or is the IP and WIFI address of the phone now in the hands of someone who can use it as long as we have the phone. I think reset should do it, my BF - not so much.