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SIM Card Lock (Not PUK Lock)

Damian98
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Hi. I accidentally set a SIM lock on a old phone I used as a temporary device until I got a new phone. On the old phone, I accidentally set a SIM Lock instead of the standard phone lock. Is there a way for me to remove this?
I've searched throughout the O2 discussions and all of this refer to PUK, which I believe is not the issue.
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MI5
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@Damian98 

You'll need to reverse the process Guide: How to set up a SIM pin on O2 

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), iPhone 8+ (EE)
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jonsie
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Enter the pin lock incorrectly 3 times and you will be asked for the PUK.

When entered it will let you choose a new pin which you can disable

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Damian98
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The first answer on the thread you linked worked a treat. (The one explaining steps on android/iOS devices).
I hope this thread is SEO friendly.
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MI5
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Glad you're sorted.
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), iPhone 8+ (EE)
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