I have a 1st generation 2g iphone that I bought used. 3 days after I got it, I was unable to access the internet or make phone calls. No wifi, no phone calls My question is... Since I am on the T-Mobile network, where can I take the phone to get it repaired? If I take it to Apple they will lock it back up and upgrade the version...2 things I want to avoid. Any ideas on what could have happened to cause it to suddenly stop working?