Samsung G810. The Samsung G810 is the successor to the famous G800 phone from Samsung. G810 is powered by Symbian OS v9.2. This is a tri-band GSM and HSDPA compatible phone. It measures 103 x 52.9 x 17.9 mm and comes with many great features including 240 x 320 pixels - 2.6 inches display, Polyphonic, MP3 ringtones, 130 MB of shared memory, microSD (TransFlash) expansion slot, GPRS, EDGE, 3G (HSDPA), wi-fi, Bluetooth and USB support. Samsung G810 's 5 MP with autofocus xenon flash and 3x optical zoom enables you to take crisp and clear images. Optical zoom is more better than digital zoom. It does also have a secondary VGA camera for video calls. GPS navigation, Geo-tagging, MP3/AAC/AAC+/e-AAC+/WMA player, Stereo FM radio, TV out etc are other great deals to have in this smart phone.