iMessages not sending?
I have an iPhone 4s, 5.1.1. Yesterday my phone was working fine, then all of a sudden out of nowhere really late around 1am my iMessages wouldn't send, and I'd have to send the messages as texts instead. Now today randomly iMessages will send and go through fine, but otherwise they won't send and I have to send them as texts. My interenet connection is fine and I have no idea what's happening, it's so annoying though.
iPhone 4S, iOS 5.1.1