By Verena Vogt
Samsung has unveiled its new Galaxy S5 smartphone, which can be unlocked with a fingerprint scanner.
The mobile phone is water and dust-resistant and features a 16-megapixel camera which the company says has the world's fastest autofocus speed, of only 0.3 seconds.
The Samsung Galaxy S5 will be available from April and was launched at the Mobile World Congress event in Barcelona this week.
'Back to basics'
Simon Stanford, vice president for the IT and mobile division of Samsung in the UK and Ireland, said: "We've decided to go back to basics with the Galaxy S5.
"We've focussed on the things that matter the most to our customers - the camera, ability to view and download data and content quickly, and their health and wellbeing.
"People want a smartphone that enhances and enables their mobile life.
"The Galaxy S5 represents just that, and we're excited to see the response to our latest flagship smartphone device."
New Sony & Nokia smartphones announced
Japanese handset maker Sony and Finnish company Nokia also announced new smartphones at the congress.
Sony is to launch its new Xperia Z2 smartphone and tablet range, which for the first time will introduce 4K high-resolution video technology to the mobile market.
The phone's 20.7 megapixel camera will offer four times the detail of a typical HD camera and is set to be the first waterproof smartphone and tablet in the world.
The Z2, which will go on sale in March, also comes with digital noise-cancelling technology and is the slimmest and lightest phone and tablet, according to Sony.
Sony Xperia Z2
Kunimasa Suzuki is president and chief executive of Sony Mobile Communications.
He said: "With Xperia Z2 we have taken our premium Z series to the next level, delivering unique experiences that only Sony can offer.
"We have redefined the smartphone once again through our camera.
"Xperia Z2 offers an innovative experience that captures memories in stunning detail through 4K video shooting, or offers new ways to use the camera with our unique Xperia camera apps."
Meanwhile, Sony's mid-range Xperia M2 smartphone, which will go on sale a month later, will be Android-based and feature waterproof technology.
Nokia's Android smartphone range
Elsewhere, Nokia is set to launch its first ever Android smartphone range, the low cost Nokia X, X+ and XL.
They are aimed at consumers in emerging markets and will use Google's operating system rather than Microsoft's Windows Phone system which it uses in its Lumia range.
However, the Nokia X range will feature Microsoft services such as Bing, Skype and Outlook rather than the Google services that come with the Android system.
The X phones will also come with the resizeable home-screen tiles, like those on Windows Phone.
The moves comes as Microsoft is buying the Finnish firm's phone business and patent rights in a 5.4 billion euro (£4.5 billion) deal, which is expected to be completed in March.