Unable to send text messages after restoring iPhone I restored my new iPhone using a third party app iSkysoft. It uses iTunes backup and restored my phone. I used it as needed to selectively restore my phone due to storage problem. Now, after restoring I am facing this problem that for all the Messages conversations that I restored, I am unable to send them message. I checked the phone number, which appears to be fine, but message cannot be cannot send.

How do I resolve this issue?
Try disabling iMessage and then enabling it again (from Settings => Messages => iMessage).