Samsung I9100 Galaxy S II vs Sony Xperia Z1 vs Xiaomi Mi 4

General Info

Manufacturer
Samsung	Sony	Xiaomi
Announced
February 2011	September 2013	July 2014
Status
Available - April 2011	Available - September 2013	Available - Q3 2014
Colors
Black, White, Pink	Black, White, Purple	Black, White
Form Factor
Candybar	Candybar	Candybar
Dimension
125.3 x 66.1 x 8.5 mm (4.93 x 2.6 x 0.33 in)	144 x 74 x 8.5 mm (5.67 x 2.91 x 0.33 in)	139.2 x 68.5 x 8.9 mm (5.48 x 2.7 x 0.35 in)
Weight
116 g (4.09 oz)	170 g (6 oz)	149 g (5.26 oz)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - all versions	GSM 850 / 900 / 1800 / 1900
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1700 / 1900 / 2100 - all versions	HSDPA 850 / 900 / 1900 / 2100
4G Network
-	LTE 800 / 850 / 900 / 1700 / 1800 / 1900 / 2100 / 2600 - C6903	LTE
Messaging
SMS, MMS, IM	SMS, MMS, Push Mail, EMail, IM	SMS, MMS, EMail, IM
Build Features
-	Waterproof (IPX5 and IPX8) Dustproof (IP5X)	-

OS
Android OS, v2.3 (Gingerbread), planned upgrade to v4.0	Android OS, v4.3 (Jelly Bean)	Android OS, v4.4.3 (KitKat)
Processor
Dual-core 1.2GHz ARM Cortex-A9 processor, Exynos chipset	Quad-core 2.2 GHz Krait 400, Qualcomm MSM8974 Snapdragon 800	Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801
GPU
Mali-400MP	Adreno 330	Adreno 330
RAM
1 GB	2 GB	3 GB
Internal Memory
16 GB/32 GB storage	16 GB	16/64 GB
External Memory
microSD, up to 32GB, 8 GB included	microSD, up to 64 GB	No

Type
Super AMOLED Plus capacitive touchscreen	TFT capacitive touchscreen	IPS LCD capacitive touchscreen
Colors
16M colors	16M colors	16M colors
Size
4.3 inches	5.0 inches	5.0 inches
Resolution
480 x 800 pixels (217 ppi)	1080 x 1920 pixels (441 ppi)	1080 x 1920 pixels (441 ppi)
Screen-to-Body Ratio
63.52%	64.55%	72.14%
Multi-Touch

Rear Camera
8 MP, 3264x2448 pixels	20.7 MP	13 MP, 4128 x 3096 pixels
Flash
LED flash	LED flash	Dual-LED Flash
Features
Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization	Auto-focus, 1/2.3' Sensor Size, Geo-tagging, Touch Focus, Face Detection, Image Stabilization, HDR, Panorama	Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR
Video
Yes, 1080p@30fps	Yes, 1080p@30fps, video stabilization, HDR	2160p, 1080p@30fps, HDR
Front Camera
Yes, 2 MP	Yes, 2 MP, 1080p@30fps	8 MP, 1080p@30fps

GPRS
Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps	Up to 107 kbps	Yes
Edge
Class 12	Up to 296 kbps	Yes
3G
HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSDPA, 42 Mbps; HSUPA, 5.8 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL	DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE
Bluetooth
Yes, v3.0+HS	Yes, v4.0 with A2DP, ANT+	v4.0, A2DP
Wi-Fi
Wi-Fi 802.11 a/b/g/n, DLNA, Wi-Fi Direct, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, DLNA, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, Wi-Fi hotspot
USB
Yes, v2.0 microUSB (MHL), USB On-the-go	Yes, microUSB v2.0 (MHL), USB On-the-go	microUSB v2.0 (MHL), USB On-the-go
GPS
Yes, with A-GPS support	Yes, with A-GPS support and GLONASS	Yes, with A-GPS, GLONASS
Browser
HTML	HTML5	HTML5