Features
Beyond its show-stopper of a camera, the K750i packs a serious list of features that appeal to both the business and pleasure desires of the high-end mobile user. The K750i is a tri-band GMS phone, with 900/1800/1900 bands and high-speed GPRS functionality. While the phone is marketed as a world phone, the lack of an 850 MHz band may be a drawback for some potential buyers.
The other featured goodie here is the music player application. The K750i supports mp3 and AAC audio files, and the included 64MB Memory Stick Duo card can be upgraded to 2GB, turning the phone into a very capable music player and photo vault. The music player features a graphic equalizer with preset and manual modes, shuffle and loop playback modes, and an FM radio with 20 presets. While the music player controls aren't quite on par with standalone mp3 players or SE's line of Walkman phones, they're still easy to use and quite functional. The included stereo headset plugs into the bottom-mounted connectivity port and includes an inline microphone for use as a hands-free headset for calls. An optional 3.5mm adapter is available if you'd rather use your own headphones.

Sony Ericsson's user interface is excellent, and access to the phone's plentiful connectivity options, applications, customization settings, and 510-entry phone book with picture and ringtone user ID is intuitive. All of the features one expects from a high-end handset are here: Datebook with to-do list and alarm reminders, MIDI and mp3/AAC ringtone support, vibrate mode, voice dialing and memo support, and speakerphone. Contact and datebook syncing is supported via USB (a data cable is included) and Bluetooth, and works with both Windows and Mac-based computers. The phone even features a Remote Control mode that lets you take command of your computer's cursor via Bluetooth: Geeks rejoice!
The file manager application provides on-phone management of audio, video, photo, game and other files, including Bluetooth/USB transfer and installation/deletion of applications. The included software CD is PC-only and supports file transfer and management when your phone and computer are connected (or if you pop the Memory Stick out of the phone and mount it on your PC's desktop). Mac users can browse the phone from their computers without any software, and third-party applications that support advanced file transfer and management are available.
Three games come preinstalled on the K750i, and many, many more are available for WAP or Web-based download. The included Super Real Tennis game absolutely blew me away. Its first person 3D graphics and game play are quite impressive and despite the physical confines of playing a video game on a phone (and how hard the game is!), I was addicted to this one from the first forehand winner I stroked.
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