Phone Comparison - Xiaomi Mi 4 vs Samsung Galaxy Alpha vs Xiaomi Redmi 2A

general General Info

Manufacturer Xiaomi Samsung Xiaomi
Announced July 2014 August 2014 March 2015
Status Available - Q3 2014 Available - September 2014 Available - March 2015
Price - - Rs. 5,999 ($88.22) [Similarly Priced]
Colors Black, White Black, white, gold, silver, blue Black, White, Yellow, Pink, Green
Form Factor Candybar Candybar Candybar
Dimension 139.2 x 68.5 x 8.9 mm
(5.48 x 2.7 x 0.35 in)
132.4 x 65.5 x 6.7 mm
(5.21 x 2.58 x 0.26 in)
-
Weight 149 g (5.26 oz) 115 g (4.06 oz) -
2G Network GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1900 / 2100
TD-SCDMA 1900 / 2100
4G Network LTE LTE LTE 1800 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 3, 7, 38, 39, 40, 41)
Messaging SMS, MMS, EMail, IM SMS, MMS, EMail, IM SMS, MMS, EMail, IM

hardware Hardware and OS

OS Android OS, v4.4.3 (KitKat) Android OS, v4.4.4 (KitKat) Android OS, v4.4 (KitKat)
Processor Quad-core 2.5 GHz Krait 400, Qualcomm MSM8974AC Snapdragon 801 Quad-core 1.8 GHz Cortex-A15 & quad-core 1.3 GHz Cortex-A7, Exynos 5 Octa 5430 Quad-core 1.5 GHz, LCI L1860C
GPU Adreno 330 Mali-T628 MP6 Mali-T628 MP4
RAM 3 GB 2 GB 1 GB
Internal Memory 16/64 GB 32 GB 8 GB
External Memory No No microSD, up to 32 GB

display Display

Type IPS LCD capacitive touchscreen Super AMOLED capacitive touchscreen IPS LCD Capacitive Touchscreen
Colors 16M colors 16M colors 16M colors
Size 5.0 inches 4.7 inches 4.7 inches
Resolution 1080 x 1920 pixels (441 ppi) 720 x 1280 pixels (320 ppi) 720 x 1280 pixels (312 ppi)
Screen-to-Body Ratio 72.14% 66.95% -
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio No FM Radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 13 MP, 4128 x 3096 pixels 12 MP, 4128 x 3096 pixels 8 MP, 3264 x 2448 pixels
Flash Dual-LED Flash LED flash LED flash
Features Auto focus, 1/3' Sensor Size, 1.12µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection, Panorama, HDR Auto focus, f/2.2 Aperture, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama, BSI Sensor, Omnivision sensor
Video 2160p, 1080p@30fps, HDR 2160p@30fps Yes, 1080p
Front Camera 8 MP, 1080p@30fps [Similar] 2.1 MP [Similar] 2 MP, 720p [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G DC-HSDPA, 42 Mbps; HSDPA, 21 Mbps; HSUPA, 5.76 Mbps; LTE HSDPA, 42 Mbps, HSUPA; LTE-A, Cat6, 300 Mbps DL HSPA, LTE Cat4 150/50 Mbps
Bluetooth v4.0, A2DP v4.0, A2DP, EDR, LE v4.0, A2DP
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, 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 Wi-Fi 802.11 b/g/n, hotspot
USB microUSB v2.0 (MHL), USB On-the-go microUSB v2.0 microUSB v2.0
GPS Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS, Beidou
Browser HTML5 HTML5 HTML5

memory User Memory

Internal 16/64 GB, 3 GB RAM 32 GB, 2 GB RAM 8 GB, 1 GB RAM
Expandable Storage No No microSD, up to 32 GB
USB OTG Supported - -

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC supported NFC supported NFC not supported

battery Battery

Type Non-removable Li-Ion Battery Li-Ion Battery Li-Po Battery
Capacity 3080 mAh 1860 mAh 2200 mAh
Stand by - - -
Talk Time - - -