Just put in sim mobile says network lock shows picture of phone dialing says ok to left and sos

[#1]

As above just put in sim says network lock shows phone dialing and ok to left sos to right 

[#2]

@stanley6789

Is your phone actually unlocked (or at least locked to O2)? Even an unactivated giffgaff SIM will display signal bars/dots.
No signal bars is a pretty clear sign that the phone is still locked to another network.

Have you tried / can you please try the SIM in another (unlocked) phone? If it works then the phone is still locked.

[#3]

Thankyou for the reply l can get it sorted now l know the problem

[#4]

Likely your phone isn't unlocked.