How To Top Up O2 Pay As You Go Online. Head on over to the top up page on the O2 website. You select the O2 top up amount then you check the order and you pay the phone credit using one of the secure payment methods.
Insert your sim into your phone. If youve used your credit or debit card before but youve changed your address since the last time you used it when you call 4444 or 0345 940 0000 to top-up youll need to enter the full details again so you can then update your address. 3000 O2 texts and 50MB of 4G ready data.
If youre on O2 Refresh you can only move to Pay As You Go once your Device Plan is paid.
If you have a My O2 account you can sign in to it from any phone or computer to check your O2 balance. Your O2 pay as you go balance will appear on your screen. From there you can choose your Top up amount and the Payment method you want to use. To top up any UK O2 number within a few minutes just select the amount of prepaid credit you want and choose your preferred payment method to finish your transaction.
