Having UMA at your disposal means that whenever there is an accessible Wi-Fi hotspot near you, be it your home, office or university, or simply in the street, the device can connect to it and use the connection for making and accepting calls and sending and receiving data similarly to using wireless VoIP-telephony on your GSM mobile phone. The handset would be able to switch connections between the licensed cellular radio access network and the Wi-Fi network even in the middle of a call without the user ever noticing. The most important difference from the widely known VoIP technology is that UMA is after all tightly linked to the mobile radio network, which is used for routing, authentication and billing. A call initiated using the Wi-Fi interface eventually reaches the 2G core network through the UMA network and, once the signal is transferred, it becomes indistinguishable from the rest of the cellular traffic. Do not throw your hopes for free calls out of the window just yet, since the technology allows the UMA-enabled devices to be used as regular VoIP handsets. But it’s of course up to the manufacturer to decide whether to block that functionality or not.
Samsung P260 is a slider, which also features Wi-Fi and UMA, as well as a 2 megapixel camera. Unluckily, it is able to record video in QCIF (176 x 144) resolution only. The P260 is a successor of the Samsung P200 and comes with a 262 TFT color display featuring a 240×320 pixel resolution. Samsung P260, whose availability and pricing still remain unknown, also has a USB port and Bluetooth with A2DP profile, which allows for listening to music on stereo Bluetooth headphones. It also has 25 MB internal memory, which can be extended on demand thanks to the available microSD card slot.
The next Korean handset is the Samsung L600, which is notable for its violet color and stylish design. It has a 1.3 megapixel camera, a microSD memory card slot, as well as an FM radio. It comes with a 176 x 220 pixel 262K color display and Bluetooth with A2DP profile. Samsung L600 features only 15 MB of internal memory and is only capable of recording video in QCIF resolution. There is still no information regarding its availability and pricing.
All phones so far come with tri-band GSM/GPRS/EDGE support and unfortunately none of them features 3G capabilities.
The last reinforcement is a remake of the already well known Samsung Z720, dubbed Mclaren Mercedes edition and made exclusively for Vodafone – it adds new flavor to the already known specs.
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