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Reactivate SIM card not used for a while

I need to reactivate an old SIM card I have not used for a while. The reason is I need access to an online account which I cannot do as the phone keeps displaying the message 'sim card registration failed' and the only way to gain access to this acco...

Using data (3/4/5 G) in Spain

Why can I only use Apps, internet etc when I am on WiFi whilst in Spain

Resolved! Number port seems to have failed.

Hi all, I requested my number be ported from Voxi to o2. This was set to happen on the 21st of this month. Both sims went to no service over night and after popping the o2 sim into my phone it's been stuck on no service since. When logging into myo2 ...

Resolved! Zon 1 bolt on not being offered in a zone 1 country

I'm in Mexico and want a zone 1 data package as displayed 100mb for £9. I am only being offered zone 2 & 3 which is double and triple the price. All contact options to speak with anyone O2 are not working, very frustrating!!!

Resolved! Abroad

Hi I am currently in turkey I have 02 travel but cannot connect to network

visual voicemail not working iphone 12 mini, monthly tariff, just changed handset from sony android

visual voicemail not working iphone 12 mini, monthly tariff, just changed handset from sony android. Only have option to call, no greeting option in top left, only call in the middle of a blank screen

Resolved! Not Able To Find Address

Been trying to order a monthly pay phone form the o2 website however when checking out I’m unable to find my address? Yet it still show up on all the other websites I have ordered from.

Resolved! Sim not activated after swap. It has been 3 days.

My old sim has been deactivated following the swap, but my new SIM, despite being recognised as an O2 SIM by the phone, has not been activated. I can't call 202 for help because neither SIM works now.

Resolved! O2 contract terminated after requesting a PAC code numerous times

Hello, So I recently purchased a new phone/SIM with O2 and took out a contract around 2 - 3 weeks ago. I decided to move my number and ported it over from Voxi. This took a while (probably 4 - 5 days in total) during which somehow both sims were acti...

‘Lost’ mobile number

I joined 02 (put sim in phone) on 13/6, gave 02 a PAC code and the number was ported from giffgaff to O2 on 14/6. giffgaff have confirmed my giffgaff sim is deactivated so no going back. Over a week later, 02 have not applied my old mobile number to ...

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