SIm registration fail!!! Nokia 6230

Hi, I have a Nokia 6230 that is with orange, i have unlocked it it said "Phone restrictions off" but when i put in the o2 sim card it says sim registration failed. What do i need to do to make it work?
It also now says the same thing with the original orange sim card.
Can some one please help me fix this problem, i need my phone urgently.

Thank you

 

It may also help to know that i had the phone cut off when it was on orange, so will this have something to do with it.

 

Pleease pleeease please, some one answer my plea!

 

The phone has been blocked by the network, this why the o2 sim gives registration failed

 

so what do i need to do to unblock it?

 

does the o2 sim work, in a different phone? that will confirm if the phone is blocked by the network

 

yes it does, i am using a phone belonging to one of my friends that i unblocked. On my handset it looks like it says O2 for a split second on the screen and then i says sim registration failed. Is there a code i can put in to stop that.

 

so the o2 sim works in a different phone that, means the phone is blocked by the network reported lost or stolen.

 

OK,yes i know the phone is blocked. When i left orange they cut me off, blocked my phone, i said that up there ^^^ now all i want to know, is there a way of unblocking the phone without calling up orange? the phone is mine, i have not bought it from anyone, it is not stolen, it is just blocked becuase i owe them some money! please does anyone have an answer that doesn't state the obvious? I already know what you have told me, i said it before.

 

Hi im actually in the exactly same situation. i have a nokia 3300 music player fone and i recently unblocked from orange on to 02 it worked for a while on 02 then i put back in the orange sim card to obtain number from it and ever since that it has been comin up sim card registration failed. The fone hasnt been reported lost or stolen because i own and i bought brand new a cupple of years ago. if anyone knows what to do can u post back to me

 

was the phone bought on contract?

 

Yes but it was a couple of years when the fone was first released do you know how to fix it?

 

if you default on payment, the network will block the phone