I just bought a 3gs off of ebay a week and a half ago. It was jailbroken and unlocked so that I could use it with T-Mobile. Today I traveled out the country to visit my grandparents for Thanksgiving. Historically, cell signal has been sketchy, so I wasn't surprised when the phone couldn't get a good signal. But I noticed that what signal it got wasn't as good as my previous phone. I also noticed that when it didn't have a cell signal, the wifi wouldn't work either. So two questions: is there something I should do that would fix this? And, being that the phone is jailbroken and unlocked, would I get any help from an Apple store or just grief? I don't have a data plan. I was just using the phone for wifi. I am a poor college student who doesn't have enough money for his own plan with AT&T, and so I am stuck on a T-Mobile family plan. I saved up money to buy an unlocked iphone so I could use it on T-Mobile without paying for data. Any suggestions for me? Thanks in advance.