Product
Vivo Y81i
Vivo Y81i
Samsung Galaxy On5 Pro
Samsung Galaxy On5 Pro
Battery
Type 3260 mAh, non-removable Li-Ion 2600 mAh, removable
Body
Build Glass front (Gorilla Glass), plastic back, plastic frame -
Dimensions 155.1 x 75 x 7.8 mm (6.11 x 2.95 x 0.31 in) 142.3 x 72.1 x 8.5 mm (5.60 x 2.84 x 0.33 in)
SIM Nano-SIM + Nano-SIM Dual SIM (Micro-SIM, dual stand-by)
Weight 143 g (5.04 oz) 149 g (5.26 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.1, A2DP
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS
Radio FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Protection Corning Gorilla Glass -
Resolution 720 x 1520 pixels, 19:9 ratio (~270 ppi density) 720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Size 6.22 inches, 96.6 cm2 (~83.0% screen-to-body ratio) 5.0 inches, 68.9 cm2 (~67.2% screen-to-body ratio)
Type IPS LCD TFT
Features
Sensors Accelerometer, proximity, compass Accelerometer, proximity
Launch
Announced 2018, October. Released 2018, November 2016, July. Released 2016, July
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash
Single 13 MP, f/2.2, PDAF 8 MP, f/2.2, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 16GB 2GB RAM 16GB 2GB RAM
  eMMC 5.1 eMMC 4.5
Misc
Colors Black, Red White, Black
Models 1812, 1812_19 SM-G5500, SM-G550F, SM-G550FY
SAR - 1.40 W/kg (head)     1.09 W/kg (body)    
SAR EU - 0.40 W/kg (head)     0.31 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100 - G550FY
4G bands 1, 3, 5, 7, 8, 38, 40, 41 1, 3, 5, 8, 20, 40 - G550FY
Speed HSPA 21.1/5.76 Mbps, LTE (2CA) Cat7 300/150 Mbps HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Platform
Chipset Mediatek MT6761 Helio A22 (12 nm) Exynos 3475 Quad (28 nm)
CPU Quad-core 2.0 GHz Cortex-A53 Quad-core 1.3 GHz Cortex-A7
GPU PowerVR GE8320 Mali-T720
OS Android 8.1 (Oreo), Funtouch 4 Android 6.0 (Marshmallow)
Selfie camera
Single 5 MP, f/2.2 5 MP, f/2.2
Video
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes