Samsung Galaxy Ace II

georgemate

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?

catmad2015

Try factory reset make sure you backup every thing first...

catmad2015

Once done it then ul have input giffgaff apn network settings in your handset manually roam correct to....

johngould

Hi,

giffgaff will work fine with an O2 locked phone.

Check the sim contacts are clean, it's the right size for the phone, and correctly inserted.

georgemate

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?