Switching is easy and you should be able to keep your old number. Arming yourself with a price you could get elsewhere is an important haggling tactic. Compare mobile phone contracts and Sim-only ...

The majority of those who take out a mobile phone contract with the cost of the new ... "Providers could make it much easier for consumers to compare prices by separating out the cost of handsets ...

About four million people have been charged for mobile phones they already own, spending £500m extra on contracts, according to Citizens Advice. Three of Britain's biggest mobile networks ...