Paying for apps using phone credit

[dajaffacake8]

How do I pay for apps on google play using pay as you go credit.

Thanks.

[BandOfBrothers]

Hi,

I remember reading this...

https://www.vodafone.co.uk/explore/music-tv-and-sports/vodafone-charge-to-bill/

And

http://www.pocket-lint.com/news/137652-vodafone-customers-can-charge-google-play-apps-to-their-bills...