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Level 1: Joiner
Posts: 1
Registered: ‎07-06-2019
Accepted Solution


Hi! I've got iPhone 5S locked to O2, I am using Giffgaff right now and I am completely happy with it but I have from time to time use Three SIM card which my employee provide to me to contact with our customers. Screen shows information that SIM card is invalid, tried connecting to iTunes (!) as you recommend but with no results, same thing happening. I tried "unlatching request" on your website but I provide you IMEI and my Giffgaff number, you replied that you dont have that number on your system. What I am suppose to do? Can someone help me? Please. Do I really have to buy O2 SIM, top it up (activate) and then ask again for unlock?

Posts: 88,206
Topics: 532
Solutions: 11,382
Registered: ‎04-04-2012

Re: Simlock

Hi @Bart1 

Yes, you need an O2 SIM so the phone can register on the system. https://community.o2.co.uk/t5/How-to-Guides/Unlocking-an-O2-phone-to-use-a-different-SIM-card/ba-p/1...

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone7 (EE)
Level 41: Prodigal
Posts: 3,846
Registered: ‎26-03-2014

Re: Simlock

Please note, if you have a good friend on o2 you can borrow their sim for a couple of hours (or let them borrow your phone, same result) and then request the unlock.
Good luck.
Now using the LG V30.

Previously: LG G4, Sony Z1, HTC Sensation XE, Samsung Omnia i900
Try the Tech Galaxy Note 4
Try the Tech Lumia 640LTE and Microsoft Band
Posts: 70,190
Topics: 547
Solutions: 3,426
Registered: ‎04-01-2009

Re: Simlock

O2 will not unlock until you use it on their network so that the sim registers on their network. Otherwise, why should they?

Community Manager
Posts: 5,360
Registered: ‎18-04-2018

Re: Simlock

Good morning @Bart1, have you had a chance to look through the advice above over the weekend? If you need any further help unlocking your iPhone 5S, please do come back and give us a shout Smiley Happy


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