topic Network unlock code doesn't work in Android

Network unlock code doesn't work

Anonymous — Sat, 21 Feb 2015 22:16:09 GMT

Hi, I recently got an upgrade and I gave my old phone to my mum (xperia z).
She is on Vodafone, so I requested a network unlock code, which didn't work. I requested another, thinking there may have been an error, and the second didn't work either. Both codes contained the required 16 digits (both different codes too).
I will call o2 on Monday. But I was wondering if there was a known issue with unlocking Sony phones? Thank you.

Re: Network unlock code doesn't work

MI5 — Sat, 21 Feb 2015 22:25:12 GMT

No we don't hear of any issues usually...

Re: Network unlock code doesn't work

Anonymous — Sat, 21 Feb 2015 22:30:57 GMT

Please note you can only enter unlocking codes up to a maximum of 10 times before your phone becomes a brick.

Re: Network unlock code doesn't work

MI5 — Sat, 21 Feb 2015 22:35:16 GMT

It sounds to me like they are sending the wrong code.
Just out of interest, I assume you have tried the voda sim in it and it doesn't work?

Re: Network unlock code doesn't work

viridis — Sun, 22 Feb 2015 01:48:38 GMT

@Anonymous wrote:
Please note you can only enter unlocking codes up to a maximum of 10 times before your phone becomes a brick.

I believe it's 5 on xperia z

Re: Network unlock code doesn't work

viridis — Sun, 22 Feb 2015 01:55:08 GMT

With your o2 sim in can you do the following :

Go to phone dialler and enter

*#*#7378423#*#*

This will open up the service setting menu.

Then go to

Service info

Then

Sim lock

Can you write back here with what is listed in the brackets the name and the number of each item there paying close attention to the network one.

Re: Network unlock code doesn't work

Anonymous — Sun, 22 Feb 2015 18:48:45 GMT

Hi, thanks for your replies. I've got an awful feeling that I've now locked it, if it's 5x. And there's nothing I can do about that?
I don't have an o2 sim that has service, as I switched to nano for my new phone and the old sim is now defunct. Does that matter?

Re: Network unlock code doesn't work

Anonymous — Sun, 22 Feb 2015 19:02:57 GMT

Tried it with my old o2, and it's showing all zero's. Looks like I killed the phone. Such a shame. Thank you for your help guys.

Re: Network unlock code doesn't work

MI5 — Sun, 22 Feb 2015 19:17:51 GMT

It's not dead, it just means it is forever locked to O2.
As O2 have provided you with an incorrect code which has caused this I would raise a complaint http://www.o2.co.uk/how-to-complain

Re: Network unlock code doesn't work

viridis — Mon, 23 Feb 2015 00:20:11 GMT

Yep, if it shows:
(x) network lock. 0
It's hard locked now to O2

Unlocked is
() network lock. 0

Locked but unlockable is

(x) network lock. 1-5

Raise a complaint as MI5 said.

Re: Network unlock code doesn't work

Anonymous — Mon, 23 Feb 2015 10:23:28 GMT

Thank you!! You've been really helpful.

Re: Network unlock code doesn't work

MI5 — Mon, 23 Feb 2015 11:24:46 GMT

Let us know how you get on please?

Re: Network unlock code doesn't work

Anonymous — Mon, 05 Dec 2016 18:33:54 GMT

I've got exaclty the same problem!

I didn't brick my phone yet, I requested a code from o2 and it isn't working. I requested another one and it isn't working...

Any advice about what to do?

Re: Network unlock code doesn't work

MI5 — Mon, 05 Dec 2016 18:38:44 GMT

@Anonymous wrote:

Any advice about what to do?

Firstly, stop putting the wrong code in!

What have you done so far to request your code and what exactly have you asked for?

What phone have you got and where did it come from?

Any other info that might help us ?

Re: Network unlock code doesn't work

Anonymous — Sat, 23 Dec 2017 00:37:26 GMT

I hav ethe same problem on a Nokia Lumia 735 with my O2 sim. I have an unlock code from O2. but when i insert the new sim from BT a screen appears after boot that asks or the unlock code but when I try to type in the code it will not take all 20 numbers. In fact the enter button greys out after try to enter more than 10 characters. any ideas please. I tried pressing enter once so now I think that I only have one more try? It said on the email from O2 to only try twice.

Re: Network unlock code doesn't work

MI5 — Sat, 23 Dec 2017 07:35:30 GMT

When you put the bt sim in and boot up, what exactly does the message on screen say?

Re: Network unlock code doesn't work

Anonymous — Sat, 23 Dec 2017 08:35:32 GMT

It's OK now thanks, I found that using the ##7820# gave me another entry screen where the field to enter the number was long enough to take the number! So that worked OK and gave me the unlock symbol and the reboot now gave me the network I wanted. O2 should have sent that code ##7820# on the instructions to save me a lot of worry and a factory reset that the online chat person told me to do was completely unecessary. So now I have to try and get the phone back to where I had it. I have a Phone backup via WM 10 but don't know how to get it restored.

Re: Network unlock code doesn't work

MI5 — Sat, 23 Dec 2017 09:28:19 GMT

When you log in with your windows id it will search for any backup and ask if you want to restore it.
You will need to factory reset to get this option though.