The FC PowerTrekk charger converts water into electricity to power a mobile.
Editor's note: Will Findlater is editor of Stuff, one of the world's best-selling gadget magazines. Follow @stufftv on Twitter.
Barcelona, Spain (CNN) -- Day two of Barcelona's mobile extravaganza brings an app to control your car, a phone that becomes a laptop and better call quality for the older generation. Stuff Magazine brings us the lowdown.
A phone that's also a tablet
Asus has been giving demos of its long-awaited Padfone -- the Russian doll of the mobile world. It's a smartphone that slots into a screen (making it a tablet), which then slots into a keyboard (making it a feasible laptop replacement). The phone itself is no slouch, with a 4.3-inch Super AMOLED display running on a 1.5GHz Snapdragon processor.
Top end tablet from Huawei
Huawei's MediaPad 10 FHD is a 10-inch tablet that will gain fans not only because it's up with the fastest quad-core tablets thanks to its K3 1.5GHz chip, but also because it has an industry-leading 1920 x 1200 IPS display. All that and it's running on the latest version of Google's Android operating system called Ice Cream Sandwich. Superfast 4G connectivity and an 8-megapixel camera complete the package which comes in at just 600g and 8.8mm thick.
Waterproof Fujitsu devices sit submerged in a fish tank.
Waterproof mobiles make a splash in Barcelona
BlackBerry in your car and in your hands
Alcatel's cost-conscious offerings
At the budget end of the smartphone spectrum, the Alcatel One Touch Ultra 995 leads the charge with a 4.3-inch display but running the older Gingerbread version of Android on a 1.4GHz processor. It's set to be closely followed by the One Touch TAB 20 -- a 7-inch Wi-Fi-equipped tablet.
Phone-controlled cars
Samsung smartphones will soon be able to connect with Toyota's In-Vehicle Infotainment (IVI) system using a new Car Mode app. The app will let drivers add voice control, multimedia capabilities and internet services to their Toyota motor. Compatible cars will be launching in summer.
Fujitsu intelligent phone prototype
This speedy quad-core smartphone prototype has a 13.1-megapixel camera on board and is waterproof like its Japanese compatriot the Panasonic Eluga. A host of intelligent features are promised, including a fingerprint scanner and compatibility with health devices such as blood pressure monitors. For a more enjoyable calling experience it also uses age-specific frequency adjustment and real-time speech slowing to help make calls crystal clear.
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A wireless in-car phone charger created by Duracell and Powermatt .
A man displays a Sony SmartWatch conected to a Sony mobile phone during a presentation at the Mobile World Congress on February 28
The Asus padfone, part phone, part tablet, part laptop, this is the Russian doll of the mobile world.
Fujitsu's speedy quad-core smartphone prototype has a 13.1-megapixel camera on board and is waterproof.
Huawei's MediaPad 10 FHD is a 10-inch tablet boasting super-fast processing speeds.
Samsung smartphones will soon be able to connect with Toyota's In-Vehicle Infotainment (IVI) system
The stylus is back! The Samsung Galaxy Note device has reintroduced the tool for more accurate touch screen control.
Samsung's Galaxy Beam features a built-in image projector
The fastest phone yet? BlackBerry showed off a device that pairs with a Porsche 911
Nokia raised eyebrows with its new PureView smartphone, boasting a 41 Megapixel camera.
Motorola shows off its combined GPS tracking device and MP3 player, which also acts as a workout coach and tracks a user's performance.
People wander through the Android display area. With no official Apple presence at the Mobile World Congress, Android phones dominate.
Demonstrators dressed in curious bobble hats staff a Nokia stand at the Mobile World Congress in Barcelona.
Duracell showcases its Powermat WiCC which can be used to wirelessly charge specially-adapted electronic devices.
The robot symbol of the Android operating system guards a display at the Mobile World Congress in Barcelona.
A hostess holds a LG Optimus Vu, which boasts one of the biggest screens seen on a smartphone.
Taiwanese phone giant HTC launched its new One range, featuring toughened Gorilla glass screens.
Ford's launched its technology-stuffed B-Max car at the Mobile World Congress to tout its hi-tech credentials.
Nokia's Lumia 900 mobile phone
An iPhone waterproofed using a substance called Liquipel is submerged at the 2012 Mobile World Congress in Barcelona.
Japanese electronics firm Fujitsu relies on waterproof seals to keep its tablets dry.
A low tech solution to waterproofing: phones are placed in airtight cases made by DiCAPac before being dunked.
Panasonic's Eluga Power smartphone is among the new breed of waterproof devices
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