Unlatching an old O2 phone

[SJK19016]

Hi all

I have an Xperia M2 that I  previously used on O2 Pay Monthly. The phone has been unused since I swapped to another phone and another provider. I now want to unlock (latch ?) the Xperia to give to a friend to use on another network.

I have provided the IMEI number to O2 and they have sent me a 16 digit unlock code with the following instructions :

" Unlatching a Sony Ericsson device :
 Power on the device with a non O2 UK SIM card.
 The device will show: SIM network unlock PIN.
 Enter the unlock code NCK for the network lock and press Unlock.
 The device will pop up a message : Network unlock successful. "

I have done the above, BUT I do not get prompted to enter the code. The phone just says "No SIM Card -No Service.

I have tried both a Factory reset, and a Software repair using Xperia Companion, and neither has made any difference.  The SIM from the other network , works fine in my other unlocked phone so I know that it isn't damaged.

Any one have any ideas, or can suggest anything that I've missed.

Cheers

[jonsie]

Don't keep entering the code

I'll ask @viridis  if he can assist

[viridis]

Sounds like the phone isn't recognising the SIM, try a different one, and make sure it's fully inserted and correctly aligned in the SIM tray.

[SJK19016]

Thanks for the replies: 

Jonsie, I am not getting the option to enter the code at all, that's the point my friend 

Viridis, the sim will only go in one way and click into place, so I'm confident it's inserted properly. As per my post I know the sim isn't damaged as it works ok in another phone.

[MI5]

@SJK19016 

Sounds like the phone is faulty then.