According to tech guru review CNBC awaz 2011 Samsung galaxy S II is the no 1 smart phone but now a days nothing is no 1, every day launch new new ekse Barker ek smart phone by the big Giant of every company.
From factor of galaxy sII:
Network tech: GSM /HSPA
SIM: mini SIM
Display
Type: Super Amoled plus capacitive touch screen
Size: 4.5
It has comes with corning gorilla glass
Dual core 1.5GHz. Micro SD card upto 32GB, 1GB RAM, Conectivity Wlan, blue tooth, gps, USB, . Java enabled
OS: Android 2.3.5 gingerbread.
Camera 8& 2mp
I use this phone last 3 years