Product
Vivo Y91
Vivo Y91
Samsung Galaxy On5 Pro
Samsung Galaxy On5 Pro
Battery
Type 4030 mAh, non-removable Li-Ion 2600 mAh, removable
Body
Build Glass front, plastic back, plastic frame -
Dimensions 155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 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 163.5 g (5.78 oz) 149 g (5.26 oz)
Comms
Bluetooth 4.2, 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
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 (~82.9% screen-to-body ratio) 5.0 inches, 68.9 cm2 (~67.2% screen-to-body ratio)
Type IPS LCD TFT
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Accelerometer, proximity
Launch
Announced 2018, November. Released 2018, November 2016, July. Released 2016, July
Status Discontinued Discontinued
Main Camera
Dual 13 MP, f/2.2, PDAF 2 MP, f/2.4, (depth) -
Features LED flash, panorama LED flash
Single - 8 MP, f/2.2, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDXC (dedicated slot)
Internal 16GB 2GB RAM, 32GB 2GB RAM, 32GB 3GB RAM 16GB 2GB RAM
  eMMC 5.1 eMMC 4.5
Misc
Colors Starry Black, Ocean Blue White, Black
Models 1816, 1817, 1820, 1811, PD1818BF_EX SM-G5500, SM-G550F, SM-G550FY
SAR 1.28 W/kg (head)     0.61 W/kg (body)     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, 40, 41 1, 3, 5, 8, 20, 40 - G550FY
Speed HSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Platform
Chipset Qualcomm SDM439 Snapdragon 439 (12 nm) Exynos 3475 Quad (28 nm)
CPU Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53) Quad-core 1.3 GHz Cortex-A7
GPU Adreno 505 Mali-T720
OS Android 8.1 (Oreo), Funtouch 4.5 Android 6.0 (Marshmallow)
Selfie camera
Single 8 MP, f/1.8 5 MP, f/2.2
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes