Apple has launched a new version of its iPhone which has double the memory of the original device.
The 16GB gadget will cost £329 compared to the existing 8GB iPhone at £269.
Its launch comes less than three months after Apple’s 8GB iPhone made its UK debut.
Mobile phone operator O2 last week announced an overhaul of its call and text tariffs for the device.
Those revised charges also apply to the new 16GB iPhone, which Apple says is available to buy from yesterday.
In addition, the technology giant unveiled a 32GB model of its iPod Touch music player priced at £329.
This will join the 16GB iPod Touch priced at £269 and the 8GB model which retails at £199.
Apple’s Vice President of worldwide iPod and iPhone product marketing, Greg Joswiak, said: ‘For some users, there’s never enough memory.
‘Now people can enjoy even more of their music, photos and videos on the most revolutionary phone and best wi-fi mobile device in the world’
The new O2 tariffs came into force on Friday for new customers.
They include allocating more bundled texts and call minutes to customers on the £35 and £45 monthly tariffs.
A £55 monthly tariff was dropped and a £75 charge introduced with more call and text time.
Which? Technology Editor Matthew Bath says the move by Apple to double the memory on its iPhone and iPod Touch shows how important the mobile phone market is to the computer company.
‘Apple and O2 have recently doubled the included minutes on the O2 mobile tariff for the iPhone in the UK, and now Apple is doubling the device’s memory to store more music, video and photos.’
He added: ‘Apple also plans to allow applications to be downloaded onto the iPhone in the next month, adding more value to its fledgling mobile as it seeks to woo new users.’