My phone won't send SMS messages?

Question

I have an LG KS10, and I recently got an O2 Sim Card for it. I have activated it, but it keeps saying 'Unable To Send Message to: (recipient)". I have quite a high signal, and the same error occurs everywhere. Can someone help me out?

Answer 1

If the phone itself is not from O2 it probably does not have their message center number programmed in it.  Call them from a different phone and they can program it and test it.  Or you do not have a text message feature on the account

Answer 2

Hmm, maybe its becoz u accidently change the text message service center number.. Im not sure whats the number becoz i dont know what telco u r using.. Try and get a friend who is using the same telco and check his phone's text messaging setting and search for "service centre" (im using sony ericsson, so, thats the word that they use.. they might use other words).  and the use the exact number and put at YOUR phone "service centre).. lol, hopefully im not confusing u..

hmmm, or maybe u dont have enough credit on ur phone