Unlocking O2 Phone

[taichiperson]

As above, I recently bought myself a new smartphone. I gave my old one to my son's girlfriend, thinking it would be simple for her to use. I did not realise I had to unlock it, as she is on a different network. I have found that I can unlock the phone using an online app (I'm with O2) but am a little foggy as to what this will do. Basically I don't have the old phone - if I use the app to unlock the phone, which one does it apply to - the old one or the new one? I don't want to go through the process and find I've messed with the new phone. Help please!

[Zacs-Master]

Just take it to an independent high street phone shop or the ubiquitous market stall.

[taichiperson]

Thanks - son's gf wants to do it legitimately - is it a bit dodgy taking it to one of those places?

[Zacs-Master]

No not at all. They do dozens a day.

[taichiperson]

Ta Zacs Master, much appreciated.

[Zacs-Master]

Nay bovver.

[Guilbert53]

If you have had the phone for a certain length of time (2 years?) then just phone up O2 and they will unlock it for you (I think, never done it).

[Guilbert53]

Some help on the O2 support page here

Seems you can do it yourself.

https://www.o2.co.uk/help/phones-sims-and-devices/unlocking-an-o2-mobile-to-use-on-a-different-network

[taichiperson]

Spat - it's the official O2 app so hopefully not dodgy at all!