Unlocked iPhone but 'No Service' is shown

[LGShepherd]

Hi,

I recently posted asking how to downgrade firmware but then I managed to change the baseband (using the iClarified source in Cydia) to the required version so I could unlock it, which I thought I did.

I have used yellowsnow and bosspref to unlock it but when I put in any sim card then it shows 'No Service'.

Is there any steps I have missed?

Another thing that may affect it is that this particular iPhone was lost and then recovered but o2 apparently blocked the phone???

Any help would be greatly appreciated.

Thanks

 

[Moi un Mouton]

My understanding is that if O2 blocks the phone, that is shared with the other UK networks and they block it too.

Unless you can get O2 to unblock it, I think you're out of luck.

 

[LGShepherd]

I thought that originally but I have restored the firmware, jailbroke and whatever else that I can do, so I thought that action may have removed that block o2 put on the phone?

Has anyone else experienced this?

 

[Moi un Mouton]

I think you may have misunderstood what blocking is. It is the process of setting the network not to allow your phone to connect. The phone has a unique identifier built in which is how the network knows it is that phone and refuses the connection.

This is nothing to do with unlocking or jailbreaking the phone.

 

[jmann]

They probably have your IMEI number blacklisted.

 

[Deep_Thought]

I think you have 2 options...

1. get the original owner to tell o2 the phone has been found and they may remove the block
2. sell the phone to someone abroad - when they block phones in the UK it only blocks them in the UK, i bought a 8910 off someone in the UK as it was blocked there but worked fine here in Spain...

 

[ianbborg]

Try removing the pin number from the sim card using another phone, that worked for me.... i couldn't get it to work with the pin code but it works flawlessly without one

 

[strikingviking]

Try RESET NETWORKS