Locked sim

[Franksie21]

Following advice to lock my sim I tried to do this using 0000 as the default  However I my sim locked  ( I only tried once) and now I cant use my phone at all  Help.  I am a wido living on my own and feel vulnerable without my phone

[jonsie]

Is it asking for a PUK code?

Any other error message?

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. If you message O2 using the links below, they should be able to help you with this

or give them a call on 202  or 0344 809 0202