Sim card locked

[Bou]

Hi, 

I have been with O2 for years(and years!) and since i now need to travel between France and the UK for work, i would like to unlock an old O2 device to use it while in France.(there are phone numbers in France that can only be called from a French number, especially for government services).

I have inserted a French sim card and it says that the sim card is locked.

Can anyone please help me unlock it? 

Thank you.

Bouchra.   

[MI5 · Accepted solution]

@Bou 

How to here 

Guide: Unlocking an O2 phone to use a different SIM card 

[Bou]

Many thanks for your reply but i get a "405 Not allowed" message when i click next after filing in the first part of the form...

Can you or anyone else help please?

Thank you.

[MI5]

@Bou 

O2 suffering a few system issues currently.

Try calling customer service.

Numbers here 

Guide: Coronavirus Community Help and Support 

[Bou]

Many thanks for your help on this.

[MI5]

You're welcome