O2 raises stakes in mobiles battle

MOBILE phone companies are finally going to war, with O2 leading the charge on new cut-price offers to business customers.

In a sweeping change that will bring big savings for business customers, O2 has unveiled a price plan that offers "unlimited free calls for 1.5 million mobile users".

This is the first time an offer of unlimited calls to such a large market - the majority of which can be made without charge has been launched in the Republic.