iPhone Wifi and data connection problem after jailbreak

[HELL0]

HI, everbody.
I'm bought an jailbroken iphone 3g. I can't use wifi and the internet connection of my plan.

Please can you help me ?
My iphone informations :
4.2.1 8C148
06.15.00

Thank you

 

[darricksailo]

HI, everbody.
I'm bought an jailbroken iphone 3g. I can't use wifi and the internet connection of my plan.

Please can you help me ?
My iphone informations :
4.2.1 8C148
06.15.00

Thank you

You can make and receive calls, send and receive text messages, but cannot connect to wifi or use cellular data, right?

You might want to downgrade the baseband. Are you using a software unlock?

 

[BumpyFlatline]

HI, everbody.
I'm bought an jailbroken iphone 3g. I can't use wifi and the internet connection of my plan.

Please can you help me ?
My iphone informations :
4.2.1 8C148
06.15.00

Thank you

Have you tried resetting Network Settings?

settings>reset>reset network settings