Product
Xiaomi Mi 2A
Xiaomi Mi 2A
Xiaomi Mi A1 (Mi 5X)
Xiaomi Mi A1 (Mi 5X)
Battery
Charging - 10W wired
Type Li-Ion 2030 mAh, removable Li-Po 3080 mAh, non-removable
Body
Build - Glass front (Gorilla Glass 3), aluminum back, aluminum frame
Dimensions 133 x 66.5 x 9.5 mm (5.24 x 2.62 x 0.37 in) 155.4 x 75.8 x 7.3 mm (6.12 x 2.98 x 0.29 in)
SIM Mini-SIM Nano-SIM + Nano-SIM
Weight 133 g (4.69 oz) 165 g (5.82 oz)
Comms
Bluetooth 4.0, A2DP 4.2, A2DP, LE
Infrared port - Yes
NFC Yes No
Positioning GPS, GLONASS GPS, GLONASS, BDS
Radio FM radio FM radio
USB microUSB 2.0, OTG USB Type-C 2.0
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Protection - Corning Gorilla Glass 3
Resolution 720 x 1280 pixels, 16:9 ratio (~326 ppi density) 1080 x 1920 pixels, 16:9 ratio (~403 ppi density)
Size 4.5 inches, 55.8 cm2 (~63.1% screen-to-body ratio) 5.5 inches, 82.6 cm2 (~70.1% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity
Launch
Announced 2013. Released 2013 2017, September. Released 2017, September
Status Discontinued Discontinued
Main Camera
Dual - 12 MP, f/2.2, 26mm (wide), 1/2.9", 1.25µm, PDAF 12 MP, f/2.6, 50mm (telephoto), 1.0µm, AF, 2x optical zoom
Features LED flash, HDR Dual-LED dual-tone flash, HDR, panorama
Single 8 MP, f/2.0, AF -
Video 1080p@30fps 4K@30fps, 1080p@30fps, 720p@120fps
Memory
Card slot No microSDXC (uses shared SIM slot)
Internal 16GB 1GB RAM 32GB 4GB RAM, 64GB 4GB RAM
  - eMMC 5.1
Misc
Colors Black (front panel), 4 color options (back panel) Black, Gold, Rose Gold, Red
Models - MDG2, MDI2
SAR - 1.75 W/kg (head)     0.76 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands - 1, 3, 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 -91.0dB / Crosstalk -82.5dB
Battery (old) - Endurance rating 87h
Camera - Photo / Video
Display - Contrast ratio: 1570:1 (nominal), 2.689 (sunlight)
Loudspeaker - Voice 74dB / Noise 73dB / Ring 90dB
Performance - GeekBench: 4292 (v4.4) GFXBench: 3.5fps (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 7.1.2 (Nougat), upgradable to Android 9.0 (Pie), Android One
Selfie camera
Single 2 MP 5 MP
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes