Belgacom, the former state-owned telecommunications company, is to cooperate with Delhaize, Accor and Coca Cola to launch a new service allowing micro-payments by mobile phone. Belgacom last week announced it was taking a 40% stake in Tunz, a specialist in mobile payments. It has also launched its own brand, PingPing, which will allow subscribers on any mobile phone network to keep an account for mobile phone payments.