I have a 8gb unlocked iPhone on the T-Mobile network. Its been working great with everything until today. I've noticed that it keeps dropping signal and will say No Service all the time. I've compared it to my GF's 4gb iPhone on T-Mobile side by side and hers will always have better reception and at times have reception when I have none. I've restored the phone back to factory specs with the same issues. Oh yeah, its running firmware 1.0.2. Has anyone had this problem with their phone?