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USSD codes for barring

vagusorbis
Level 1: Joiner
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I've turned off the mobile data on my phone, but somehome it seemed to have leaked and costed me data usage. I'm 100% certain that I've never accidentally turned it on, and have been using wifi only.

 

Is there a USSD code / short code to key in on dialpad to manually bar data usage from the account?

 

In fact, I'm also looking for a complete list of USSD codes available on O2 but couldn't find any meaningful links.

 

TIA.

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Cleoriff
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@vagusorbis 

I thought the question was asked and answered here?

https://community.o2.co.uk/t5/My-O2/Data-blocking/m-p/1404584/highlight/true#M10194 

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MI5
Level 94: Supreme
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All generic USSD codes should work on O2.
The only specific ones are for account balance / allowances.
Mobile data can only be turned off by calling customer service to request it or by choosing the £5 bundle which doesn't include a data allowance.
If you have a phone with WIFI assist feature, make sure it's turned off.
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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