Problem: having problems calling, texting, and connecting to the Internet (when not in wifi). Simcard looks fine, went round and round with the tmobile folks and apple folks, while they were pleasant, had me try things that didn't work, like turning the phone off and re-setting certain things. The phone has the latest updated software and didn't start acting screwy until a couple weeks ago and has got progressively worse.
Any suggestions would be appreciated but I'm a technology tard so please dumb it down for me. I can make an occasional call or text but its a rarity. I'm starting to hate technology!