Product
Vivo Y51 (2020, September)
Vivo Y51 (2020, September)
Samsung Galaxy J7 Prime
Samsung Galaxy J7 Prime
Battery
Charging 18W wired -
Music play - Up to 84 h
Talk time - Up to 21 h (3G)
Type 4500 mAh Li-Ion 3300 mAh, non-removable
Body
Build - Glass front (Gorilla Glass), aluminum/plastic back, aluminum frame
Dimensions 159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in) 151.7 x 75 x 8 mm (5.97 x 2.95 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIMNano-SIM + Nano-SIM
Weight 186.7 g (6.60 oz) 167 g (5.89 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.1, A2DP, LE
NFC No No
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, BDS
Radio FM radio FM radio
USB USB Type-C 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Protection - Corning Gorilla Glass (market dependent)
Resolution 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density) 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Size 6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~73.3% screen-to-body ratio)
Type Super AMOLED PLS LCD
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, proximity
  - ANT+
Launch
Announced 2020, September 15 2016, September 01. Released 2016, November 30
Status Available. Released 2020, September 19 Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, panorama, HDR
Quad 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) -
Single - 13 MP, f/1.9, 28mm (wide), AF
Video 1080p@30fps, gyro-EIS 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 128GB 4GB RAM 16GB 3GB RAM, 32GB 3GB RAM, 64GB 3GB RAM
  - eMMC 5.1
Misc
Colors Mystic Black, Jazzy Blue, Dreamy White Black, Gold, Rose Gold
Models - SM-G610F, SM-G610Y, SM-G610M, SM-G610
SAR - 0.56 W/kg (head)     1.02 W/kg (body)    
SAR EU - 0.40 W/kg (head)     1.40 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 3, 5, 8, 40 1, 3, 5, 7, 8, 20, 38, 40
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
Platform
Chipset Qualcomm SDM665 Snapdragon 665 (11 nm) Exynos 7870 Octa (14 nm)
CPU Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core 1.6 GHz Cortex-A53
GPU Adreno 610 Mali-T830 MP1
OS Android 10, Funtouch 10 Android 6.0.1 (Marshmallow), upgradable to Android 9.0 (Pie), One UI
Selfie camera
Features HDR -
Single 16 MP, f/2.0, (wide), 1/3.06" 1.0µm 8 MP, f/1.9
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes