Help Mobile network not working

[momondo]

Hey!
I have a HTC desire S..
But the mobile network is not working.
When i connect the phone just says "Use phone for data connection when wifi is unavailable..
There is a wifi router near, but its very slow, so i want to use my mobile network instead.
Wifi is turned OFF
APN is setup Correctly.
I have 10 GB data, so that isnt it
I tried:
Reboot the phone..
Recover mobile (So phone is as new)
Please help

 

[ggldn]

are you rooted if so make a nandroid back up then do a full wipe with CWM, if that doesnt work try to flash a new rom,

if problem still persists you MAY need to flash a new radio as this one may not be working for you.. MAY being the operative word.

If not rooted, take it back to the store