Phone is locked to 02 and I thought if would not need unlocking. Have activated giffgaff SIM but phone continues to instruct me to insert SIM. Does this mean I have to unlock?
Thank you! I've done that and now its insisting that I don't have a SIM card installed. I've tried removing it, cleaning it, putting it back in and starting again but still get same message. Could the SIM be faulty?