just added a data plan

[melo107]

and my phone keep saying could not activate cellular data network:You are not subscribed to a cellular data service

what do i do???
yes its a unlocked 2.2 first gen but its not jailbroken

[cpjr]

If its unlocked....then its jailbroken...unless your using a sim-adaptor.

You have to input the correct networks settings into the phone for your carrier.

Settings - General - Network - General Network Settings.