Hi,
I've got quite similar problem to this subject: /t5/Xperia-Z3/Z3-asking-for-sim-network-unlocking-pin-after-repair/td-p/1017179, but there was no response, beacuse this post is from 2015, but maybe there is someone who can help me. I will copy here my emails with Sony.
e-mail 1:
Hello.
I have an X PEERIA M5, which I send twice to your service. Ever since I got it back there seems to be a SIMLOCK on the device, allowing me to use only my Lebara sim card. This problem did not occur before, as I was able to swap my UK(Lebara) and Polish(Play) sim card without any problems. Today I wanted to switch to my new sim(Three UK), but my phone is asking again for a PIN number, which I never set. Could you please help me with this problem. Neither Lebara or Three ever touched my phone, so I'm assuming the SIMLOCK was placed in a Sony support centre. Thank you for your reply.
Karolina
Sony answer:
Dear Karolina,
Thank you for contacting the Sony Xperia support centre.
We are sorry to hear about the unlocking issues you are facing with your Xperia M5, we hope to resolve this issue shortly.
However, as Sony does not insert any codes on its devices, we would recommed contacting Lebara as the lock is most probably set by them.
Sorry for the inconvenience, and thank you for your patience.
e-mail 2:
Hello,
As I have stated earlier Lebara did not come with contact with my phone, as such could not have placed a SIMLOCK on my device. Sony is the only entity that has in any way tinkered with my phone. I would like to express again that I did not have this issue prior to sending my device to Sony and as such I find Sony responsible for my current problem. Furthermore, my boyfriend has the same exact phone and he had no problems swaping his SIM cards, so the SIM card itself is likely not the problem.Now I am paying for a network contract I can't use and I would like to hear a solution form you other that contacting a network provider that has never need in direct contact with my phone. Thank you for your reply.
Sony answer:
Dear Karolina,
Thank you for contacting the Sony Xperia support centre
We would like to extend our sincerest apologies for any trouble this may have caused you.
But, With regards to your query, As we mentioned before in our previous communication we as Sony don't have any hand in such a lock made by the SIM card.
We would recommend contacting your network provider to get it sorted.
***
So as you can see, Sony avoid responsibilty for that and deny everything. To be honest I don't know what to do. I have SIM PIN to my cards, which I never had to use, but they are not properly to what my phone is asking for.
Thanks for any reply and suggestions.
Karolina
