Unlocked HTC Inspire Wont receive SMS

[AlicetheZombieKiller]

I can recieve SMS from certain people but others I won't receive anything. They can receive my messages but I get nothing in return when they send back. Does anyone know how to fix this problem? I have restarted my phone twice and nothing. Please Help me.

 

[techjunkie92]

Make sure your APN settings are correct for the service your using.