Vodafone Bonus Bank is a new scheme made by the mobile phone operator to reward prepay customers every time they top up their phone. Customers will be given extra 10 percent each time they top up.

In consequence, when a customers adds 10 pounds, Vodafone will place an extra 1 pound into a savings account. The customer can spend the bosu after three months and as long as he has a minimum of 5 pounds.

Furthermore, customers can decide how to spend their savings on their on topping their phone or buying another handset.

Vodafone prepay customers can sign up to the scheme by simply texting the word "BonusBank" to 2345, or alternatively by calling the same number or visiting www.vodafone.co.uk/bonusbank.