Product
Oppo A16s
Oppo A16s
Vivo Y31 (2015)
Vivo Y31 (2015)
Battery
Type Li-Po 5000 mAh 2100 mAh, removable
Body
Dimensions 163.8 x 75.6 x 8.4 mm (6.45 x 2.98 x 0.33 in) 137.2 x 68.8 x 8.4 mm (5.40 x 2.71 x 0.33 in)
SIM Nano-SIM + Nano-SIM Dual SIM
Weight 190 g (6.70 oz) 137 g (4.83 oz)
Comms
Bluetooth 5.0, A2DP, LE, aptX 4.0, A2DP
NFC Yes No
Positioning GPS, GLONASS, GALILEO, BDS, QZSS GPS
Radio Unspecified FM radio
USB USB Type-C 2.0, OTG microUSB 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, hotspot
Display
Resolution 720 x 1600 pixels, 20:9 ratio (~269 ppi density) 720 x 1280 pixels, 16:9 ratio (~312 ppi density)
Size 6.52 inches, 102.6 cm2 (~82.9% screen-to-body ratio) 4.7 inches, 60.9 cm2 (~64.5% screen-to-body ratio)
Type IPS LCD, 480 nits (typ) IPS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Accelerometer, proximity, compass
Launch
Announced 2021, August 14 2015, September. Released 2015, October
Status Available. Released 2021, August 14 Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR
Single - 8 MP
Triple 13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Video 1080p@30fps 720p@30fps
Memory
Card slot microSDXC microSDXC (dedicated slot)
Internal 64GB 4GB RAM 8GB 1GB RAM
  eMMC 5.1 -
Misc
Colors Pearl Blue, Crystal Black White, Black
Models CPH2271 Y31L, Y31
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 66 -
Speed HSPA, LTE HSPA
Technology GSM / HSPA / LTE GSM / HSPA
Platform
Chipset Mediatek MT6765G Helio G35 (12 nm) Mediatek MT6580 (28 nm)
CPU Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) Quad-core 1.3 GHz Cortex-A7
GPU PowerVR GE8320 Mali-400MP2
OS Android 11, ColorOS 11.1 Android 5.1 (Lollipop), Funtouch 2.1
Selfie camera
Features HDR -
Single 8 MP, f/2.0, 26mm (wide) 2 MP
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes