[germcevoy]

Been hearing rumours that the O2 devices may be unlocked. Anybody in the UK bought one and tried it with another sim?

[1101x10]

Tried it with my Orange sim but it said it was locked.

[BIGPADDY]

It will worked with giffgaff

[richard_c]

From my knowledge giffgaff is on the o2 network so thats why it will work. The same would applty if you got the phone from Tesco Mobile

[chancooluk]

From my knowledge giffgaff is on the o2 network so thats why it will work. The same would applty if you got the phone from Tesco Mobile

Not the phone, but the sim. If you purchased a lumia 620 from Tesco Mobile, it will only work on Tesco Mobile, as they lock to the MVNO subset of the network.

If you purchase the phone from O2, a Tesco Mobile sim will work, as they use the O2 network.