iphone won't connect to internet

[th3nd]

ok im new. so wassup

i just got a iphone from my friend. He had it jailbroken and unlocked with a t-mobile sim card. I used to have a vu for at&t but i took the simcard out and slid it into the iphone and it worked. the internet and everything .

Now since i updated and restored the iphone it says

"Could not activate cellular data network" You are not subcribed to a cellular data service


i can still send pics. n get txt

but i don't know what went wrong


help?

i have firmware 3.1.2.

 

[eezing]

I'm thinking you may need a new SIM card. Take it to an at&t store and have them try a new one. Sounds weird that it worked when the phone was unlocked, maybe that allowed for a wider range of SIM card models?

My iPhone couldn't access the cellular network with a "pay as you go" phone SIM. I took it down to an at&t store and swapped it out, that did the trick.

 

[th3nd]

yea it worked for a good week. i even threw other peoples sim card in it and it worked. The whole restoring process was crazy

i don't know if it can hack it properly since i updated it or if their is sum sofware out there