T-Mobile has opened up its web'n'walk internet service to its pay-as-you-go handset customers today hoping to draw in more users.

The announcement, designed to open up the mobile internet to everyone, will give T-Mobile pay-as-you-go customers the ability to email and surf the web whenever and with complete control on costs.

T-Mobile has said that 1 kilobyte of data will cost under 1p however to encourage more use, the company is capping the cost of browsing to £1 a day for unlimited access if the customers is signed up to Mates Rates, Text Appeal and Everyone pay-as-you-go plans.

Users are not penalised for accessing the internet several times a day and spending less than £1 during each session, as the cost of each separate session counts towards the £1 threshold.