Thanks for your post on the Community and welcome. I'm sorry to hear that you are experiencing an issue with sending text messages. Has this been sorted out for your since your post? Is this happening with all texts or just one specific number?
Please check your SMS Network setting. Does the status show Send/Receive? Even if it is showing this already, please reset it to Send/Receive. Does it work now?
Next, please try updating the Short Message Service Centre Number (SMSC) to +447958879890. Can you send text messages now?
If you are still having an issue with this, please send me a private message by clicking this link: PM me here and provide the following details:
Full name on the account
* For other forum users reading this, please only PM me if I have asked you to first.