Why can't I send SMS on my S4?

[stafoya37]

I switched from Verizon to AT&T and now I cannot send messages.

 

[B. Diddy]

Welcome to Android Central! Is this for all messages including simple text messages, or is it only for MMS (i.e., picture messaging and group texting)?

If it's for all messages, then see this thread: http://forums.androidcentral.com/ve...-center-number-verizon-samsung-galaxy-s4.html