Xiaomi Mi 3 vs Xiaomi Mi 4i vs Xiaomi Redmi 4X

General Info

Manufacturer
Xiaomi	Xiaomi	Xiaomi
Announced
September 2013	April 2015	February 2017
Status
Available - December 2013	Available - April 2015	Available - March 2017
Price
-	Rs. 8,999 ($132.34) [Similarly Priced]	Rs. 6,790 ($100.00) [Similarly Priced]
Colors
Various	Black, White, Blue, Yellow, Pink	Cherry Pink, Champagne Gold, Matte Black
Form Factor
Candybar	Candybar	Candybar
Dimension
144 x 73.6 x 8.1 mm (5.67 x 2.9 x 0.32 in)	138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)	139.24 x 69.96 x 8.65 mm (5.48 x 2.75 x 0.34 in)
Weight
145 g (5.11 oz)	130 g (4.59 oz)	150 g (5.29 oz)
SIM Type
-	-	Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card)
2G Network
GSM 850 / 900 / 1800 / 1900	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100 / 800 - Taiwan
4G Network
-	LTE	LTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 18(800), 19(800), 26(850), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Taiwan
Messaging
SMS, MMS, EMail, IM	SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail, IM
Build Features
-	-	- Fingerprint Sensor - Infrared Sensor - Metal Build - 2.5D Curved Glass
Notification LED
-	-	Yes

OS
Android OS, v4.4 (KitKat) optimized with MIUI version 5	Android OS, v5.0 (Lollipop)	Android OS, v6.0.1 (Marshmallow)
Processor
Quad-core 2.3 GHz Krait 400, Qualcomm MSM8274AB Snapdragon 800	Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615	Octa-core 1.4 GHz Cortex-A53, Qualcomm MSM8940 Snapdragon 435
GPU
Adreno 330	Adreno 405	Adreno 505
RAM
2 GB	2 GB	2/3 GB
Internal Memory
16/64 GB	16/32 GB	16/32 GB
External Memory
No	No	microSD, up to 128 GB (uses SIM 2 slot)

Type
IPS LCD capacitive touchscreen	IPS LCD capacitive touchscreen	IPS LCD Capacitive Touchscreen
Colors
16M colors	16M colors	16M colors
Size
5.0 inches	5.0 inches	5.0 inches
Resolution
1080 x 1920 pixels (441 ppi)	1080 x 1920 pixels (441 ppi)	720 x 1280 pixels (294 ppi)
Screen-to-Body Ratio
64.90%	71.57%	70.62%
Multi-Touch

Rear Camera
13 MP, 4128 x 3096 pixels	13 MP, 4128 x 3096 pixels	13 MP, 4160 x 3120 pixels
Flash
dual-LED flash	LED flash	Dual-LED (dual Tone)
Features
Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR	Auto focus, Geo-tagging, Touch Focus, Face/smile Detection, Panorama, HDR	Phase Detection Autofocus, f/2.2 aperture, Geo-tagging, Touch Focus, Face Detection, Panorama, HDR
Video
1080p@30fps, HDR	1080p@30fps	1080p@30fps
Front Camera
2 MP, 1080p@30fps	5 MP	5 MP

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps	HSPA, LTE	HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps, VoLTE
Bluetooth
v4.0, A2DP	v4.0, A2DP	v4.2, A2DP, EDR, LE
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, Wi-Fi hotspot	Wi-Fi 802.11 a/b/g/n, dual-band, hotspot	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
USB
microUSB v2.0 (MHL), USB On-the-go	microUSB v2.0	microUSB v2.0, USB OTG
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS, BDS
Browser
HTML5	HTML5	HTML5