Xiaomi Redmi 3 vs Xiaomi MI 2a vs Xiaomi MI 4 LTE

BASIC INFO
Model No - - -
Status Discontinued Available. Released 2013, October Available. Released 2014, December
Release Date 2016, January 2013, September 2014, December
Dimension 139.3 x 69.6 x 8.5 mm (5.48 x 2.74 x 0.33 in) 133 x 66.5 x 9.5 mm (5.24 x 2.62 x 0.37 in) 139.2 x 68.5 x 8.9 mm (5.48 x 2.70 x 0.35 in)
Weight 144 g (5.08 oz) 133 g (4.69 oz) 149 g (5.26 oz)
Colors Various Black (front panel), 4 color options (back panel) Black, White
Body Metrial - - -
W & D Proof - - -
SIM Type Dual SIM (Micro-SIM/Nano-SIM, dual stand-by) - Micro-SIM
Technology GSM / CDMA / HSPA / EVDO / LTE - GSM / HSPA / LTE
OS Android OS, v5.1 (Lollipop) Android OS, v4.1 (Jelly Bean) Android OS, v4.4.3 (KitKat)
PROSESSING
Processor Quad-core 1.5 GHz Cortex-A53 & quad-core 1.2 GHz Cortex-A53 Dual-core 1.7 GHz Quad-core 2.5 GHz Krait 400
Chipset Qualcomm MSM8939v2 Snapdragon 616 - Qualcomm MSM8974AC Snapdragon 801
GPU Adreno 405 - Adreno 330
MEMORY
RAM 2GB - 3GB
Storage 16GB - 16GB
Card Slot up to 128 GB (uses SIM 2 slot) 16 GB, 1 GB RAM No
DISPLAY
Size 5 inches 720 x 1280 pixels, 4.5 inches (~326 ppi pixel density) 5.0 inches
Type IPS LCD capacitive touchscreen, 16M colors IPS LCD capacitive touchscreen, 16M colors IPS+ LCD capacitive touchscreen, 16M colors
Resolation 720 x 1280 pixels - 1080 x 1920 pixels
PPI 294 ppi pixel density - 441 ppi pixel density
Multi touch Yes - MIUI 7.0 - Yes, MIUI 5.0
Protection - - -
CAMERA
Primary 13 MP, 4128x3096 pixels, Autofocus 8 MP, 3264 x 2448 pixels, autofocus, LED flash 13 MP, f/1.8, autofocus
Video Yes, 1080p@30fps Yes, 1080p@30fps Yes, 2160p@30fps, 1080p@30fps
Flash LED flash - Led flash
Features Geo-tagging, touch focus, face/smile detection, HDR, panorama - 1/3 Inches sensor size, 1.12µm pixel size, geo-tagging, touch focus, face/smile detection, panorama, HDR
Selfie Yes, 5 MP Yes, 2 MP, 1080p@30fps 8 MP, f/1.8, 1080p@30fps
BATTERY
Battery Li-po Li-Ion 2030 mAh battery Li-Ion
Capacity 4100 mAh - 3080 mAh
Removable Non-removable - Non-removable
StandBy - - -
Talk Time - - -
Music Play - - -
Browsing - - -
Video Playback - - -
F Charging - - -
W Charging - - -
NETWORK
2G Network GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800 / 1900
GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
TD-SCDMA
HSDPA 850 / 1900 / 2100 HSDPA 850 / 1900 / 2100
4G Network LTE band 1(2100), 3(1800), 7(2600), 38(2600), 39(1900), 40(2300), 41(2500) - LTE - international model
Speed HSPA, LTE, EV-DO Rev.A 3.1 Mbps - HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
5G - - -
CONECTIVY
WALAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot
BlueTooth v4.1, A2DP Yes, v4.0 with A2DP v4.0, A2DP
USB Yes, microUSB v2.0 Yes, microUSB v2.0 microUSB v2.0, USB Host
GPS Yes, with A-GPS support Yes, with A-GPS support and GLONASS Yes, with A-GPS, GLONASS, BDS
NFC - - No
Audio jeck - - Yes, 3.5mm
OTHERS
Sensors Accelerometer, gyro, proximity, compass - Accelerometer, gyro, proximity, compass, barometer
Radio Yes TBD FM radio
SARUS - - -
SAREU - - -
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