By this time, 3 Mobile also had more than four million subscribers who had taken advantage of its pre-pay and contract services. Many new customers were prompted to switch from their old network by 3 Mobile's catchy advertising slogans and attractive promotions.

Popular promotions have included free Skype calls, as well as international roaming on overseas networks operated by 3 Mobile. Meanwhile, its price plans have always been competitive, especially when purchased with a 3 Mobile discount voucher.

Customers can use 3 Mobile discount codes to purchase handsets and arrange contracts at a large number of online retailers. Alternatively, customers can shop at one of 3 Mobile's high-street branches. Those shopping online should check if their chosen retailer accepts discount vouchers from 3 Mobile before deciding to make a purchase.

By 2010, more than 97 per cent of the UK's population was covered by the 3 Mobile networks. Much of that 97 per cent also had access to 3 Mobile's 3G mobile broadband, providing more 3G coverage than any other mobile network in the UK. Much of this success has been achieved by teaming up with competitor T-Mobile.