Gday guys..

I have just upgraded, jailbroken and unlocked my iphone today. Apart from that, the only other change is I put a different SIM card in.

Now, I cannot get any kind of caller ID. NO numbers come up when displayed and those that are in my contacts also dont appear.

The SIM card was in another phone where the caller id and name display worked fine. Also, prior to the changes, the sim card from the iphone supplier also had caller ID and name display.

Can anyone shed some light on what may have happened or how I might get around fixing it?