I'm having terrible problems sending SMS texts using a Z200 on the Jersey Telecoms mobile network.

Sometimes the phone says that the Message has failed and it is saved to the Unsent folder, however the message is often actually sent - as shown by the replies I get to the apparently failed message.

Of course, sometimes the message is really unsent which makes it pretty difficult to see if the message has actually gone or out.

I've checked I'm trying to send the right type of message (Text) and I've checked my service center number and this is fine.

Does anyone have any bright ideas that I could try??? Thanks