HELP!!! Cannot text and when i try to call it says "call failed" immediately!

[flamewipe]

Hello,

right i've got an 3g iphone 8gb which is unlocked and jailbroken. I'm on T-mobile (not sure if it makes a difference in this situation) and until earlier this week my phone worked with no problems what so ever (even with the simcard in!). I went to put my simcard in earlier this week and my phone wouldn't text, then when i went to call it would immediately say call ended. "Call forwarding active" comes up on the screen with dismiss underneath it too. I've read every post i could find regarding call forwarding active, changed my number to not hidden etc and despite i don't have call forwarding active it doesn't make a difference. I've reset my phone, re-jailbroken/unlocked it and it still doesn't work. My internet works but thats about it. My flat mate has a t-mobile simcard too so i tried that and that dosen't work either in the phone however when we use the simcards in any other phones they work perfectly!
Any suggestions would be very much appreciated!

[sursture]

Would suspect that you have (at some point) done a FW upgrade and used the iTunes' backed-up settings.

Do a complete restore - set up as a new iPhone in iTunes.
Jailbreak-unlock using Redsn0w.
Make sure to correct the APN settings so they correspond to Tmobile.

Quite certain you will now have a working iPhone

[flamewipe]

Cheers for that,

i've done what you said, put in the APN settings i found on the internet but still no luck, any ideas on the APN settings incase i've put the wrong ones in?

Thanks

[confucious]

'Call forwarding active' just means incoming calls are being forwarded to voicemail.

What country are you in?

[flamewipe]

I'm in the UK, England. i can't call out or text though. Doesn't give me the opportunity.

[confucious]

APN is general.t-mobile.uk
user is one2one and password is t-mobile

But that is only for data.

Do you get a T-Mobile signal?

[flamewipe]

Yeah i get full signal, i get 3g, the internet works too.
i've posted...

T-mobile UK APN carrier settings.. for the settings and things i've tried but unfortunately haven't worked.

[confucious]

Restore phone in iTunes with T SIM in, set up as new. RedSnow and UltraSn0w with T SIM in and all will be fine.

[flamewipe]

Restore phone in iTunes with T SIM in, set up as new. RedSnow and UltraSn0w with T SIM in and all will be fine.

I tried this but unfortunately i didn't have much luck