Texts won't send

[Anonymous]

Hi, my phone was sending messages but then they just stopped sending I have unlimited texts, I've restarted it and I've cleaned the sim

Any help would be appreciated

[Anonymous]

Try

Settings ~ General ~ Reset ~ Reset Network Settings.

iMessages require a data connection or wifi.

Check their are no update to carrier settings.
http://support.apple.com/kb/ht1970

It could be a network glitch / mast congestion issue.

How are things today ?

[Anonymous]

As an after thought.

If you do feel your phone is at fault then their are a couple of options.

Make a back up up iTunes and or iCloud and then restore your iPhone.

How to link : http://support.apple.com/kb/ht1766

Make a Genius Bar Appointment to have a diagnostic run on it.

Appointment Link : http://www.apple.com/uk/retail/geniusbar/