The cost of sending a text, making and receiving calls and using data is capped in the EU, but many holidaymakers aren't sure which countries are in the European Union, which could leave them facing hefty mobile phone bills.
Angry T-Mobile users hit by price hikes are launching a fight to escape their contracts penalty-free, citing a mix-up by the mobile giant. However, regulator Ofcom has put a dampener on the idea.
As the Office of Fair Trading (OFT) announces it will investigate whether mobile and tablet games encourage children to spend hefty sums, MoneySavingExpert.com has found a host of iPhone games which charge up to £70 a pop for virtual items.