Hi, it's EE but I would have thought if it was a crash at their end that I wouldn't be able to send messages either? APMF - how do I know if the memory's full? I've deleted all the texts I've had in my inbox and the ones that I've sent. Should I do anything else? Thanks for the kind replies.
If you've deleted old texts then memory shouldn't be an issue.
I sometimes get text messages that were sent hours ago. I was still able to successfully send texts during this time. So, from a technical viewpoint the ability to send texts isn't directly related to your ability to receive texts.
Try taking the battery out for about 15 seconds and then putting it back in. It's the phone version of rebooting your PC when it's not working properly.