What about if someone had private access to your phone and hacked in?

Question

Someone either lifted my BB or it fell out of my purse at a "friend's" house and when I retrieved it the next morning, some things started making me suspicious:
1.  An apps icon that I had not downloaded was on my desktop - although the Verizon rep told me that some BB apps are automatically added to your desktop and that this may have been the case here. 
2. Mentioned a restaurant in a text message to a friend, and not 10 minutes after arriving, the suspected phone hacker showed up at the same location
3. Rapid battery depletion with no excessive use
4. Strange "radio" sounds coming from phone when idle 
I have wiped my phone several times, and remain concerned because item #4 above happened after multiple wipes.  I am not sure that everything was deleted.... all of my photos, songs, videos etc are still on phone.  My address book was deleted.  I reinstalled a backup from February (the phone was missing one night - 4/16).  My phone book did not repopulate when backup was reinstalled.  I went to the Verizon store to have them setup my browser - none of my bookmarks had been wiped either. 
My phone is still under warranty, and Verizon is sending me a replacement.  Will this end the issue?  Will I need to change my phone number?  I have over a year left on my Verizon contract and going with a new provider is not an option.  Please advise!!

Answer 1

That's the great thing with ios is it uses a sandbox file system. So installing spyware confines it to its sandbox so it cannot access other file or track anything. Unless you jailbreak at that point there is no more sandbox.