One Cent Call is a microdonations service that lets mobile users donate a small amount every time they make a call or send a text. They get to choose which charity or charities benefits. It could be a penny per text or call, or it could be a set amount like £5 each month.
In the UK it is available on Three, Virgin Mobile, O2 and Vodafone.
The donation appears on the user's mobile phone bill at the end of each month.
www.onecentcall.org