K750i Issue

[zulander]

OK got this phone not long ago on Orange and its good but has 1 really annoying problem. If i go to send someone a txt usually its just one number in my address book thats effected when i try to send the message i get sending failed even if i have full signal strength. If i use the reply function to send a msg to this person it normally works tho any ideas? Just to complicate matters i tired replying to another number today and it failed even tho i had full signal really getting annoying now, i dont know if the problem is with the phone or orange? cheers

[Grey M@a]

I get this on all the phone I use, and its always to the same person to :/ they changed their phone and it started working. There was no explanation for it, just did it until the phone was changed