Product
Xiaomi Mi 2A
Xiaomi Mi 2A
Vivo Z3x
Vivo Z3x
Battery
Type Li-Ion 2030 mAh, removable Li-Ion 3260 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) 154.8 x 75 x 7.9 mm (6.09 x 2.95 x 0.31 in)
SIM Mini-SIM Nano-SIM + Nano-SIM
Weight 133 g (4.69 oz) 150 g (5.29 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, Wi-Fi Direct
Display
Resolution 720 x 1280 pixels, 16:9 ratio (~326 ppi density) 1080 x 2280 pixels, 19:9 ratio (~403 ppi density)
Size 4.5 inches, 55.8 cm2 (~63.1% screen-to-body ratio) 6.26 inches, 97.8 cm2 (~84.2% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Fingerprint (rear-mounted), accelerometer, proximity, compass
Launch
Announced 2013. Released 2013 2019, April. Released 2019, May
Status Discontinued Discontinued
Main Camera
Dual - 13 MP, f/2.2, PDAF 2 MP, f/2.4, (depth)
Features LED flash, HDR LED flash, panorama
Single 8 MP, f/2.0, AF -
Video 1080p@30fps 1080p@30fps
Memory
Card slot No microSDXC (dedicated slot)
Internal 16GB 1GB RAM 64GB 4GB RAM, 64GB 6GB RAM
  - eMMC 5.1
Misc
Colors Black (front panel), 4 color options (back panel) Black, Red, Aurora
Models - V1730GA
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, 5, 8, 34, 38, 39, 40, 41
Speed HSPA 21.1/5.76 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / HSPA GSM / CDMA / HSPA / LTE
  - CDMA 800 & TD-SCDMA
Platform
Chipset Qualcomm Snapdragon S4 Pro Qualcomm SDM660 Snapdragon 660 (14 nm)
CPU Dual-core 1.7 GHz Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)
GPU Adreno 320 Adreno 512
OS Android 4.1 (Jelly Bean) Android 9.0 (Pie), Funtouch 9
Selfie camera
Single 2 MP 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes