Nokia

[Celou]

I have phoned Vodafone and they told me to go into Network, delete Vodafone and type it in again. That didn't solve the problem.

I am able to phone people and I receive texts, just unable to send them. Any ideas at all?

[SynthFG]

Go through the messages settings until you get to the message centre settings,

the message centre number should be +447785016005

check this first

[Celou]

Yes I did that, thank you, the number was correct. I still can't send texts though

[SynthFG]

Have you tried the sim in another handset to see if its an account or handset issue

If you have and the other phone can send texts

take a back up of the C3 contents then try a factory reset (phone management menu)

If that doesn't work we can get more radical