Product
Xiaomi Mi 2A
Xiaomi Mi 2A
Vivo Z1Pro
Vivo Z1Pro
Battery
Charging - 18W wired
Type Li-Ion 2030 mAh, removable 5000 mAh, non-removable
Body
Build - Glass front, plastic back, plastic frame
Dimensions 133 x 66.5 x 9.5 mm (5.24 x 2.62 x 0.37 in) 162.4 x 77.3 x 8.9 mm (6.39 x 3.04 x 0.35 in)
SIM Mini-SIM Nano-SIM + Nano-SIM
Weight 133 g (4.69 oz) 201 g (7.09 oz)
Comms
Bluetooth 4.0, A2DP 5.0, A2DP, LE
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/ac, dual-band, Wi-Fi Direct
Display
Resolution 720 x 1280 pixels, 16:9 ratio (~326 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~395 ppi density)
Size 4.5 inches, 55.8 cm2 (~63.1% screen-to-body ratio) 6.53 inches, 104.7 cm2 (~83.4% 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 2019, July. Released 2019, July
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR LED flash, HDR, panorama
Single 8 MP, f/2.0, AF -
Triple - 16 MP, f/1.8, (wide), 1/2.8", 1.12µm, AF 8 MP, f/2.2, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (depth)
Video 1080p@30fps 4K@30fps, 1080p@30/60fps
Memory
Card slot No microSDXC (dedicated slot)
Internal 16GB 1GB RAM 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
  - UFS 2.1
Misc
Colors Black (front panel), 4 color options (back panel) Sonic Blue, Sonic Black, Mirror Black
Models - 1951, PD1911F_EX, 1918
SAR - 0.75 W/kg (head)     0.40 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 900 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands - 1, 3, 4, 5, 8, 34, 38, 39, 40, 41
Speed HSPA 21.1/5.76 Mbps HSPA, LTE
Technology GSM / HSPA GSM / CDMA / HSPA / LTE
  - CDMA 800 & TD-SCDMA
Our Tests
Performance - AnTuTu: 184517 (v7) GeekBench: 6001 (v4.4) GFXBench: 13fps (ES 3.1 onscreen)
Platform
Chipset Qualcomm Snapdragon S4 Pro Qualcomm SDM712 Snapdragon 712 (10 nm)
CPU Dual-core 1.7 GHz Octa-core (2x2.3 GHz Kryo 360 Gold & 6x1.7 GHz Kryo 360 Silver)
GPU Adreno 320 Adreno 616
OS Android 4.1 (Jelly Bean) Android 9.0 (Pie), upgradable to Android 10, Funtouch 10
Selfie camera
Features - HDR
Single 2 MP 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 1080p@30fps 1080p@60fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes