There are several Google Android phones from many mobile phone brands. the most popular Android phone is T-mobile G1. the Android OS is very special because it is a open source OS. also it based on linux. Samsung i7500 is the first Samsung phone which has Android OS. also it is the newest Android phone.
it is a 3G phone which support both HSDPA and HSUPA. i7500 supports 7.2Mbps HSDPA and 2.0 Mbps HSUPA connectivity.it has 3.2 inch OLED capacitive touchscreen which supports 320 x 480 pixels resolution.
Samsung I7500 has a Accelerometer sensor and Handwriting recognition feature. it has very powerful hardware to properly run Android OS. the processor is Qualcomm MSM7200A 528 MHz and RAM is 128Mb. the internal memory of this phone is 8GB and it supports up to 16GB memory cards. i7500 has mini USB port and 3.5mm audio jack.
the main camera is 5Mp and the maximum picture resolution is 2592 x 1944 pixels. it has built in LED flash and supports geo-tagging.
the Google Android OS comes with number of built-in applications like Google Search, Maps, Gmail,YouTube, Calendar and Google Talk.