Sony Ericsson Aino Specification

Screen:3 inch(432 x 240 pixels)
Touchscreen:Yes
Camera:8.1MP
Memory Card:microSD
Connectivity:Bluetooth 2.0,aGPS,Wi-Fi
Battery:1000mAh
Size:104 x 50 x 15.5mm
Weight:134gram

Information from Wikipedia

Sony Ericsson Satio Specification

Screen:3.5 inch(360 x 640 pixels)
Touchscreen:Yes
Camera:12.1MP
Operating System:Symbian OS 9.4
Memory:128MB and 256MB RAM
Memory Card:microSD
Storage:1GB
Connectivity:Bluetooth 2.0,aGPS,Wi-Fi
Battery:1000mAh
Size:112 x 55 x 13mm
Weight:126gram

Information from Wikipedia

Sony Ericsson XPERIA X10 Specification

Screen:4 inch(480 x 854 pixels)
Touchscreen:Yes
Camera:8.1MP
Operating System:Android
CPU:Snapdragon 1Ghz
Memory:256MB
Memory Card:microSDHC
Storage:1GB
Connectivity:Bluetooth 2.0,microUSB 2.0,3.5mm audio jack,aGPS,Wi-Fi
Battery:1500mAh
Size:119 x 63 x 13mm
Weight:135gram

Information from Wikipedia