cannot text one person on my address book
I have started to have a problem texting one person on my address book she can text me and I can phone her but not text. It looks as though it has gone but she does not receive it. I note other people have had this problem and have group text to get around it. I am not sure if this works and would like a better solution is there one? Using iPhone 5, network Lycamobile, and firmware 8.02.00
I have reset the network, switched on and off, re booted.
It was working until very recently
Thanks
iPhone 5, iOS 8.0.2