Help! 2g iphone on T-Mobile network died

[seedling30]

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?

 

[mkrishnan]

If this is an EDGE iPhone, why are you worrying about having it upgraded? The original iPhone remains unlockable on any software revision, AFAIK. But FWIW, I would think at this point, the price of buying a replacement on eBay will be comparable to getting it repaired, unless it has an extended warranty.

Now, anyway, have you already tried restoring it, just to make sure it isn't a software issue?