Phone messages

[PGTip]

I have an android phone and until now have been able to text no problem. Today however whenever I text one particular friend the message bounces back to me and she therefore doesn't see it. I receive messages from her no problem but I can't reply. Any ideas!!

[prh47bridge]

If it only applies to one friend and you have the correct number for her the problem will be at her end, not yours. She may have accidentally blocked you.

[PGTip]

That's what I thought but she's checked and it's not the case. Wouldn't blocking mean neither would receive messages from each other?