Swapping Google accounts on a G510

[Cheesysocks]

My 12 year old son has a G510. He has his own Google account with which to get free stuff from the Play store but I obviously won't set my debit card to this account.

I have a Google account too for my S3, which has my debit card linked. I wish to use this account to make an in game purchase for him but I can only access his account. Both accounts are on the phone. Settings - accounts allows me to add my account and shows both but all I can do with my account is sync stuff, not make it the current account for ingame purchases.

Can you tell me how to swap accounts please? Thanks.

 

[Rukbat]

You can't. What you can do is add your card to his account, make the purchase, then delete the card from his account.

 

[Cheesysocks]

I was hoping not to put the card on his account but I'll look at how safe it is.