I can’t spend my balance on in app purchases

[Goaty]

I used to be able to pay for in app purchases with my o2 balance but for some reason it won’t let me anymore 

[jonsie · Accepted solution]

How do I set up Charge to Mobile?

On Android:

1. Choose what you want to buy on Google Play and go to buy.
2. Go to the ‘Payment Methods’ window. It should appear automatically. If not, go back to the window with the ‘Buy’ button and open the dropdown menu by tapping the arrow next to the price.
3. Choose ‘Use O2 Billing’, follow the steps and then enter your details and save as your payment method.

On iPhone:

1. Go to the App Store.
2. Scroll down to the bottom of the screen and tap your Apple ID.
3. Tap ‘View Apple ID’ and sign in.
4. Go to ‘Payment Information’.
5. Select ‘Mobile Phone’.
6. Tap ‘Use This Mobile Number’.

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. If you message O2 using the links below, they should be able to help you with this
or give them a call on 202  or 0344 809 0202

[Oxonian]

@Goaty 

There is a bit more, including a short video, at :-

Charge to Mobile | Help & Support | O2

https://www.o2.co.uk/help/digital-services/charge-to-mobile