Samsung i550

Samsung i550 is an impressive device with a built in GPS, 3.2 megapixel auto-focus camera, HSDPA connectivity, and a 3.5mm audio jack. It runs S60 3rd Edition Feature Pack 1 from Symbian OS 9.2 which includes the second version of the S60 browser, Flash Lite 2.0 support and a variety of UI improvements. Wonder of wonders is the built in GPS. It still not clear if there will be any accompanying software although the i550 should run any of the numerous GPS / Navigation software available for S60 including Nokia Maps.
The i550 is a WCDMA with 2100Mhz and tri-band GSM phone with the 900/1800/1900 MHz as usually with GPRS, EDGE and HSDPA for data connectivity. USB 2.0 via mini USB and Bluetooth 2.0 including A2DP and AVRCP provide local connectivity options.
For multimedia the phone has a 3.5mm audio jack, a 2.6 inch QVGA screen with 262,000 colours, an FM Radio, a 3.2 megapixel camera with LED flash and autofocus, 150 MB built in and a microSD card slot for memory expansion with support for SDHC cards that can go up to 4GB. About size, the i550 measures in at 115 ×53 x 13.8 mm in its dimensions making in taller than the similar specified N95, but not as thick. The battery has a capacity off 1200 mAh which should provide enough power for heavy use over a 24 hour period.
The i550 hardware has a few remarkable points:
The presence of a trackball (as used on the Blackberry Pearl) in place of the more usual direction pad.
Hardware buttons for key hardware features including the S60 keys, a Web key and a GPS key.
Front facing camera for video calls Camera capture button on the side of the device below the memory card slot

source & image:
allaboutsymbian.com