Samsung Galaxy S4
The Samsung Galaxy S4 was activated with AT&T and running Android 4.3 (Jelly Bean). It features a 5-inch wide full-HD Super AMOLED screen. It comes with a Qualcomm Snapdragon 600 1.9 GHz Quad-Core Processor or an Exynos 1.6-GHz Octa-Core Processor with 2GB RAM. It has the Broadcom BCM4335 wireless chipset. For Wi-Fi, the S4 offers single stream 802.11ac. The chipset supports Broadcom's TurboQAM technology that implements the 256-QAM mode in both the 2.4 and 5 GHz bands to help increase data rates. It also supports beamforming for 802.11n/ac, low-density parity-check (LDPC) code, and space-time block code (STBC). The S4 averaged 105Mbps and reached a maximum of 213Mbps.