unable to make a call

[Android Question]

I have samsung galaxy y. unable to make a call. when i try to dial it ends immediately. rest of the features are working fine. like can receive incoming calls, data connection is working fine. only dialing feature is not working.
tried rebooting the device, checked with some other sim .. but the same problem.
Please help

 

[Rukbat]

Install a different dialer (try Go dialer) and see what happens.