Hi again Philip. There are multiple ways to top up your O2 account.
Step 1: Sign in to My O2 to set up your auto top-up.
Step 2: Choose the amount and if you want to get topped up on a certain day/date or when your balance gets low.
Step 3: We'll then top you up automatically. You can change or cancel whenever you like. Click here to set auto top up
Hi Carl,
My apologies for the late reply. We are with O2. I bought the phone for my Dad due to its simplicity and it contains his O2 SIM card, but I have no idea about how you put money on it!
Thanks