O2

The AA, Sky and Virgin Media are the easiest companies to haggle with, new research by MoneySavingExpert.com shows.

MoneySavingExpert.com is today warning O2 mobile users to beware making calls to financial service firms, or revealing any other private details, as you could be overheard due to a crossed lines glitch.

EE has launched a price 'promotion' on its 4G superfast service — but it could end up costing users more.

Consumers are to be protected against landline, broadband and mobile firms that raise prices mid-way through their contract term.

Mobile giant Three must withdraw a "misleading" leaflet, which failed to include information stating that pay monthly mobile contracts could rise mid-term, the Advertising Standards Authority (ASA) ruled this week.

Orange and TalkTalk have been shamed as the most complained-about telecoms providers.

O2's seven million pay monthly mobile phone customers will be hit by price hikes from next year, the provider announced today.

Mobile firm Giffgaff has admitted a glitch meant thousands of customers either couldn't use their phones or didn't have top-ups activated over the past few days.

Mobile phone giant O2 has hiked roaming rates for customers travelling outside the European Union — with costs nearly trebling in some cases.

A new era for mobile phone users begins today as superfast 4G products and services are made available to consumers in 11 cities across the UK.