Error Message When Sending Text

[Tomathion]

I keep getting this message whenever I try to send a text to my brother:

[Class 0 Message

Sorry, numbers beginning 07 should be 11 digits long. Please check the number and try again

From: Network Msg]

The number is definitely 11 digits long as I'm texting him back from a text that he sent me.

Thanks in advance.

 

[Rukbat]

Sounds like a carrier problem. Check with your carrier.