Product
Xiaomi Redmi 2
Xiaomi Redmi 2
₹5,999
Xiaomi Redmi 4A
Xiaomi Redmi 4A
₹7,499
Battery
Charging 10W wired, QC1 -
Type Li-Po 2200 mAh, removable Li-Ion 3120 mAh, non-removable
Body
Build Glass front (Gorilla Glass 2), plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in) 139.9 x 70.4 x 8.5 mm (5.51 x 2.77 x 0.33 in)
SIM Dual SIM (Micro-SIM, dual stand-by) Nano-SIM + Micro-SIM
Weight 133 g (4.69 oz) 131.5 g (4.66 oz)
Comms
Bluetooth 4.0, A2DP, LE 4.1, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, BDS
Radio Stereo FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 2 -
Resolution 720 x 1280 pixels, 16:9 ratio (~312 ppi density) 720 x 1280 pixels, 16:9 ratio (~296 ppi density)
Size 4.7 inches, 60.9 cm2 (~67.6% screen-to-body ratio) 5.0 inches, 68.0 cm2 (~69.0% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity
Launch
Announced 2015, January. Released 2015, January 2016, November. Released 2016, November
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR LED flash, HDR, panorama
Single 8 MP, f/2.2, 28mm (wide), 1/3.2", 1.4µm, AF 13 MP, f/2.2, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDHC (dedicated slot) microSDXC (uses shared SIM slot)
Internal 8GB 1GB RAM, 16GB 2GB RAM 16GB 2GB RAM, 32GB 2GB RAM, 32GB 3GB RAM
  eMMC 4.5 eMMC 5.1
Misc
Colors Black, White, Yellow, Pink, Green Gold, Rose Gold, Dark Gray
Models 2014817, 2014818, 2014816, HM2014821 2016117
SAR 0.70 W/kg (head)     0.70 W/kg (body)     0.53 W/kg (head)     1.18 W/kg (body)    
Network
2G bands GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 3, 7, 38, 39, 40, 41 1, 3, 4, 5, 7, 20, 38, 40
Speed HSPA, LTE Cat4 150/50 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  TD-SCDMA -
Our Tests
Audio quality Noise -94.8dB / Crosstalk -95.8dB -
Battery (old) Endurance rating 55h -
Camera Photo / Video Photo / Video
Display Contrast ratio: 974:1 (nominal), 1.763 (sunlight) -
Loudspeaker Voice 70dB / Noise 70dB / Ring 77dB -
Performance Basemark OS II 2.0: 511 GeekBench: 1781 (v4.4)
Platform
Chipset Qualcomm MSM8916 Snapdragon 410 (28 nm) Qualcomm MSM8917 Snapdragon 425 (28 nm)
CPU Quad-core 1.2 GHz Cortex-A53 Quad-core 1.4 GHz Cortex-A53
GPU Adreno 306 Adreno 308
OS Android 4.4.4 (KitKat), MIUI 6.0 Android 6.0.1 (Marshmallow), MIUI 10
Selfie camera
Single 2 MP 5 MP, f/2.2
Video 720p
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
Offers No offers available No offers available