Samsung's latest flagship phone, the Galaxy S III, has officially launched in the UK - despite some shops reporting that they don't have any in stock.
The Korean company said that the Galaxy S3 had launched on time in 28 countries, including most of Europe and the Middle East.
Samsung said in a press release that by July the Galaxy S3 will have launched in 145 countries - on 296 different mobile networks.
It also promises that users will be able to enjoy the "people-centric philosophy" of the new phone.
Vodafone said it was the most sought-after Android device it had ever offered for pre-order.
"In the two years that we've been offering pre-orders, it's the most pre-ordered Android device we've had in our line-up," said a spokesman for Vodafone UK, according to Reuters.
As well as the normal phone retailers, the S3 is also available at Samsung's two pop-up PIN stores in London, which can be found at Westfield Shepherd’s Bush and Old Spitalfields Market off Bishopsgate Road.
But there are also some delays for UK customers.
According to Pocket-Lint, the Pebble Blue version of the phone will not be available when the device hits the shops.
Another retailer, Clove UK, said that all versions of the phone will be delayed until the start of June.
The 4.8-inch Super AMOLED screen phone - which among other delights boasts eye-tracking technology to stop the phone turning off when you're looking at it - has been well reviewed by the press.
The phone is expected to sell well after its predecessor, the Galaxy S2, shifted about 20m units worldwide.
The S2's strong performance helped Samsung close the game on Apple's iPhone - and helped the company sell 44.5m smartphones in the first quarter of this year.
That figure was more than Apple, who sold 35.1m, though Samsung's figure was spread over several devices.
"The Galaxy S3 is a real challenger to the upcoming iPhone," one analyst - Francisco Jeronimo, from IDC - told Reuters news agency.
"This is likely be one of the most sold smartphones this year, though the real test will come when the next iPhone is launched."