Product
Xiaomi Mi 2A
Xiaomi Mi 2A
₹20,500
Xiaomi Redmi Note 4
Xiaomi Redmi Note 4
₹15,338
Battery
Type Li-Ion 2030 mAh, removable Li-Po 4100 mAh, non-removable
Body
Build - Glass front, aluminum back, aluminum frame
Dimensions 133 x 66.5 x 9.5 mm (5.24 x 2.62 x 0.37 in) 151 x 76 x 8.5 mm (5.94 x 2.99 x 0.33 in)
SIM Mini-SIM Nano-SIM + Micro-SIM
Weight 133 g (4.69 oz) 165 g (5.82 oz)
Comms
Bluetooth 4.0, A2DP 4.1, A2DP, LE
Infrared port - Yes
NFC Yes No
Positioning GPS, GLONASS GPS, GLONASS, BDS
Radio FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct
Display
Resolution 720 x 1280 pixels, 16:9 ratio (~326 ppi density) 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Size 4.5 inches, 55.8 cm2 (~63.1% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~72.7% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2013. Released 2013 2017, January. Released 2017, January
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR Dual-LED dual-tone flash, panorama, HDR
Single 8 MP, f/2.0, AF 13 MP, f/2.0, 1/3.1", 1.12µm, PDAF
Video 1080p@30fps 1080p@30fps, 720p@120fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 16GB 1GB RAM 32GB 3GB RAM, 64GB 3GB RAM, 64GB 4GB RAM
  - eMMC 5.1
Misc
Colors Black (front panel), 4 color options (back panel) Dark Gray, Gold, Black, Lake Blue
Models - 2016100
SAR EU - 0.72 W/kg (head)     0.67 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands - 1, 3, 4, 5, 7, 8, 20, 38, 40
Speed HSPA 21.1/5.76 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / HSPA GSM / HSPA / LTE
Our Tests
Audio quality - Noise -94.6dB / Crosstalk -94.3dB
Battery (old) - Endurance rating 119h
Camera - Photo / Video
Display - Contrast ratio: 1503:1 (nominal), 2.714 (sunlight)
Loudspeaker - Voice 67dB / Noise 70dB / Ring 81dB
Performance - GFXBench: 3.4fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm Snapdragon S4 Pro Qualcomm MSM8953 Snapdragon 625 (14 nm)
CPU Dual-core 1.7 GHz Octa-core 2.0 GHz Cortex-A53
GPU Adreno 320 Adreno 506
OS Android 4.1 (Jelly Bean) Android 6.0 (Marshmallow), upgradable to 7.0 (Nougat), MIUI 11
Selfie camera
Single 2 MP 5 MP, f/2.0
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  - 24-bit/192kHz audio
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