Product
Vivo Y77
Vivo Y77
Samsung Galaxy J7 Prime 2
Samsung Galaxy J7 Prime 2
Battery
Charging 18W wired -
Music play - Up to 84 h
Talk time - Up to 21 h (3G)
Type 5000 mAh Li-Ion 3300 mAh, non-removable
Body
Build Glass front, plastic frame, plastic back Glass front (Gorilla Glass), aluminum/plastic back, aluminum frame
Dimensions 164 x 75.8 x 8.3 mm (6.46 x 2.98 x 0.33 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 194 g (6.84 oz) 170 g (6.00 oz)
Comms
Bluetooth 5.1, A2DP, LE, aptX HD 4.1, A2DP, LE
NFC No No
Positioning GPS, GLONASS, GALILEO, BDS, QZSS 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 2408 pixels, 20:9 ratio (~401 ppi density) 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Size 6.58 inches, 104.3 cm2 (~83.9% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~73.3% screen-to-body ratio)
Type IPS LCD PLS LCD
Features
Sensors Fingerprint (side-mounted), accelerometer, proximity, compass Fingerprint (front-mounted), accelerometer, proximity
  - ANT+
Launch
Announced 2022, July 04 2018, March. Released 2018, April
Status Available. Released 2022, July 07 Discontinued
Main Camera
Dual 50 MP, f/1.8, 26mm (wide), PDAF 2 MP, f/2.4, (macro) -
Features LED flash, HDR, panorama LED flash, panorama, HDR
Single - 13 MP, f/1.9, 28mm (wide), AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 128GB 8GB RAM, 256GB 8GB RAM 32GB 3GB RAM
  - eMMC 5.1
Misc
Colors Glowing galaxy, Starlight black Black, Gold, Rose Gold
Models V2169 SM-G611F, SM-G611FF, SM-G611M, SM-G611MT, SM-G611K
SAR - 0.61 W/kg (head)    
SAR EU - 0.37 W/kg (head)     1.63 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 1, 3, 5, 7, 8, 20, 38, 40
5G bands 1, 3, 28, 40, 41, 78 SA/NSA -
Speed HSPA, LTE, 5G HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / HSPA / LTE / 5G GSM / HSPA / LTE
Platform
Chipset Mediatek Dimensity 810 (6 nm) Exynos 7870 Octa (14 nm)
CPU Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core 1.6 GHz Cortex-A53
GPU Mali-G57 MC2 Mali-T830 MP1
OS Android 12, Funtouch 12 Android 7.0 (Nougat), upgradable to Android 9.0 (Pie)
Selfie camera
Single 16 MP, f/2.0, (wide) 13 MP, f/1.9, 1/3.1", 1.12µm
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes