Coinstar is targeting small retailers with a new self-service top-up kiosk for pre-paid mobile phone users.

The service works with the O2, Orange, T-Mobile, Virgin Mobile and Vodafone networks, and is due to launch at the Retail Solutions Show in Birmingham this week.

Customers select ‘Mobile Phone Top-up’ from the Coinstar machine’s touchscreen menu, choose their network provider, insert cash and take a receipt.