Apple

If you use Twitter on an iPad or iPhone, check your settings now, as its new 'autoplay' default video setting could eat into your data allowance and leave you with a big bill. And for Android users, it's 'coming soon'.

Users of certain Apple devices will soon be able to pay for goods at some UK retailers including Boots and Starbucks and for travel on Transport for London simply by touching their handset or watch to a contactless reader.

Three online games could be investigated by the Advertising Standards Authority (ASA) following concerns they may encourage children to buy extra game features when playing.

Mobile phone users who send a smiley or sad face, or any type of picture icon in a text, could be stung with massive charges – one MoneySaver told us her son racked up a £209 bill.

Games firms have been given two months to clean up their act, in an attempt to prevent children racking up huge bills when playing online on phones and tablets.

MoneySavingExpert.com is calling for UK customers to be refunded after it's been confirmed US iPad and iPhone users whose kids ran up bills making in-app game purchases will get their money back from Apple.

If you're planning on getting your hands on Apple's eagerly anticipated new iPad Air, which launched today, make sure you cut the cost by taking advantage of the top deals, including Tesco's £30 off offer.

Update: 20.09.2013: Tesco Mobile has today released its price plans for the iPhone 5C, so we have updated this news story with this information.

If you're thinking of selling an iPhone, especially now the new iPhone 5C and 5S have been launched, be warned that the price you get for it could soon plummet.