on 16-12-2023 13:00
I'm abroad right now. I have a voucher code and got it for £10. I want to top up my line. When I call 4444 it rings busy and when I dial *111*# it gives an error like UNKNOWN TRANSACTION. How can I solve the problem?
on 16-12-2023 13:12
Call +44 7860 980 202 free from your O2 phone
on 16-12-2023 13:14
You may also be able to Top up using My O2
on 16-12-2023 13:19
on 16-12-2023 13:19
If you read this guide you will find a 3rd part company called Mobile TopUp UK.
You pay them using a debit/credit card or Paypal and it issues a new top up voucher
Veritas Numquam Perit
on 16-12-2023 13:53
I try to call the phone you specified, but it rings busy.
on 16-12-2023 13:57
I can only suggest you keep trying.
Calling at 8.00am UK time will give you the best chance or try messaging on social media.
Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG)