Samsung Galaxy S4

Hardware specifications:

5Inch Full HD Super AMOLED 1,920 x 1,080 display, 441ppi
4G (LTE Cat 3 100Mbits/sec download / 50Mbits/sec upload)

3G (HSPA+ 42Mbits/sec downloads)
microSD slot (up to 64GB)
16/32/64GB internal storage
2GB of RAM
1.6GHz Octa-Core processor/1.9GHz quad-core processor in UK (see below)
Bluetooth 4
Dual-band 802.11abgn/ac Wi-Fi
NFC
GPS
Infrared LED (for remote-control functions)
microUSB charger

Camera:  It has both Primary and secondary camera. Both camera can be used at a time and it is very interesting that pictures of two cameras can be combined in a frame.

2-megapixel front-facing camera

13-megapixel rear-facing camera

Full HD video recording at 30fps
Li-ion 2,600mAh battery

Operating System:

Android 4.2.2 (Jelly Bean)

Dimensions:

136.6 x 69.8 x 7.9mm 

Weight:

130g