Sony Ericsson Z780 is upgrade to the Z770, using similarly designed clamshell form-factor but improving the specs. It is global GSM and 3G phone and supports aGPS for navigation.
A Stylish Flip phone support GSM Quad-Band and Tri-Band 3G with Navigation options courtesy of inbuilt Assisted GPS
Sony Ericsson Z780 can potentially go for days without being recharged. It has a 2.2-inch screen and an LCD (color TFT/TFD) display. It has a clamshell body. It comes equipped with a music player. Sony Ericsson Z780 can stream videos. It has GPS capabilities. It has games available. It has speaker phone. It has Bluetooth compatibility. It can send and receive text messages. It can play custom ringtones and has real-music ringers.