3.1.2 no network during call

[360psp]

I recently upgraded to 3.1.2 using pwnagetool. Now when i make a call my network disapears and i cannot go on the internet. Is there something i need to put in the carrier settings? if so what?
I have the web2go plan.

[djkns]

u can upgrade with itunes 3.1.2 now and use blackra1n to jail break and blacksn0w to unlock... it keeps the carrier logo... for the internet setting it depends on your data plan.... could be any of these apn

internet2.voicestream.com
epc.tmobile.com
wap.voicestream.com

[adp]

I recently upgraded to 3.1.2 using pwnagetool. Now when i make a call my network disapears and i cannot go on the internet. Is there something i need to put in the carrier settings? if so what?
I have the web2go plan.

Cellular network is automatically disabled by the iPhone while you are on a phone conversation. If you have wifi, that's a different story.