Xiaomi Mi 4i vs Xiaomi Redmi 4 vs Xiaomi Redmi 4A

General Info

Manufacturer
Xiaomi	Xiaomi	Xiaomi
Announced
April 2015	November 2016	November 2016
Status
Available - April 2015	Available - November 2016	Available - November 2016
Price
Rs. 8,999 ($132.34) [Similarly Priced]	Rs. 8,900 ($133.00) [Similarly Priced]	Rs. 5,999 ($92.00) [Similarly Priced]
Colors
Black, White, Blue, Yellow, Pink	Dark Gray, Silver, Gold	Gold, Rose Gold, Dark Gray
Form Factor
Candybar	Candybar	Candybar
Dimension
138.1 x 69.6 x 7.8 mm (5.44 x 2.74 x 0.31 in)	141.3 x 69.6 x 8.9 mm (5.56 x 2.74 x 0.35 in)	139.5 x 70.4 x 8.5 mm (5.49 x 2.77 x 0.33 in)
Weight
130 g (4.59 oz)	156 g (5.5 oz)	131.5 g (4.62.0.18 oz)
SIM Type
-	Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card)	Dual SIM Hybrid (Nano SIM + Micro SIM, or Micro SIM + microSD Card)
2G Network
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2	GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO
3G Network
HSDPA 850 / 900 / 1900 / 2100	HSDPA 850 / 900 / 1900 / 2100 / 800 - Taiwan	HSDPA 850 / 1900 / 2100
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	LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500)
Messaging
SMS, MMS, EMail, IM	SMS, MMS, Push Mail, EMail, IM	SMS, MMS, EMail, IM
Build Features
-	- Fingerprint Sensor - Infrared Sensor - Metal Build - 2.5D Curved Glass	- Metal Body - Infrared Sensor

OS
Android OS, v5.0 (Lollipop)	Android OS, v6.0.1 (Marshmallow)	Android OS, v6.0.1 (Marshmallow)
User Interface
-	MIUI 8	MIUI 8
Processor
Quad-core 1.7 GHz Cortex-A53 & quad-core 1.0 GHz Cortex-A53, Qualcomm MSM8939 Snapdragon 615	Octa-core 2.0 GHz Cortex-A53, Qualcomm MSM8953 Snapdragon 625	Quad-core 1.4 GHz Cortex-A53, Qualcomm MSM8917 Snapdragon 425
GPU
Adreno 405	Adreno 506	Adreno 308
RAM
2 GB	3 GB	2 GB
Internal Memory
16/32 GB	32 GB	16 GB
External Memory
No	microSD, up to 128 GB (uses SIM 2 slot)	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
71.57%	69.95%	70.04%
Multi-Touch

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

GPRS
Yes	Yes	Yes
Edge
Yes	Yes	Yes
3G
HSPA, LTE	HSPA 42.2/5.76 Mbps, LTE Cat6 300/50 Mbps, VoLTE	HSPA, LTE, EV-DO Rev.A 3.1 Mbps, VoLTE
Bluetooth
v4.0, A2DP	v4.2, A2DP, EDR, LE	v4.1, A2DP
Wi-Fi
Wi-Fi 802.11 a/b/g/n, dual-band, hotspot	Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot	Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
USB
microUSB v2.0	microUSB v2.0, USB OTG	microUSB v2.0
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS, BDS	Yes, with A-GPS, GLONASS, BDS
Browser
HTML5	HTML5	HTML5