Product
Vivo Y77 (China)
Vivo Y77 (China)
Samsung Galaxy J7 Duo
Samsung Galaxy J7 Duo
Battery
Charging 80W wired -
Type 4500 mAh Li-Ion 3000 mAh, removable
Body
Build Glass front, plastic frame, plastic back -
Dimensions 164.2 x 75.8 x 8.6 mm (6.46 x 2.98 x 0.34 in) 153.5 x 77.2 x 8.2 mm (6.04 x 3.04 x 0.32 in)
SIM Nano-SIM + Nano-SIM Single SIM (Micro-SIM) or Dual SIM (Micro-SIM, dual stand-by)
Weight 194 g (6.84 oz) 174 g (6.14 oz)
Comms
Bluetooth 5.3, A2DP, LE, aptX HD 4.2, A2DP, LE
NFC No No
Positioning GPS, GLONASS, GALILEO, BDS, QZSS GPS, GLONASS, BDS
Radio No 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 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Resolution 1080 x 2388 pixels (~395 ppi density) 720 x 1280 pixels, 16:9 ratio (~267 ppi density)
Size 6.64 inches, 106.8 cm2 (~85.8% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~70.4% screen-to-body ratio)
Type IPS LCD, 120Hz Super AMOLED
Features
Sensors Fingerprint (side-mounted), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, proximity
  - ANT+
Launch
Announced 2022, July 08 2018, April. Released 2018, April
Status Available. Released 2022, July 11 Discontinued
Main Camera
Dual 50 MP, f/1.8, (wide), PDAF 2 MP, f/2.4, (macro) 13 MP, f/1.9, AF 5 MP, f/1.9, (depth)
Features LED flash, HDR, panorama LED flash, panorama, HDR
Video 1080p@30fps 1080p@30fps
Memory
Card slot No microSDXC (dedicated slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM 32GB 3GB RAM, 32GB 4GB RAM
  UFS 2.2 eMMC 5.1
Misc
Colors Black, Silver, Blue Black, Gold, Rose Gold, White, Blue
Models V2219A SM-J720F, SM-J720F/DS, SM-J720M, SM-J720M/DS
SAR EU - 0.54 W/kg (head)     1.40 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1900 / 2100 - International
4G bands 1, 3, 5, 8, 28, 34, 38, 39, 40, 41 1, 3, 5, 7, 8, 20, 38, 40, 41 - International
5G bands 1, 5, 8, 28, 41, 77, 78 SA/NSA -
Speed HSPA, LTE, 5G HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Technology GSM / CDMA / HSPA / CDMA2000 / LTE / 5G GSM / HSPA / LTE
  CDMA2000 1x 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 28, 38, 40, 41, 66 - USA
Platform
Chipset Mediatek Dimensity 930 (6 nm) Exynos 7885 (14 nm)
CPU Octa-core (2x2.2 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53)
GPU IMG BXM-8-256 Mali-G71
OS Android 12, OriginOS Ocean Android 8.0 (Oreo), upgradable to Android 9.0 (Pie)
Selfie camera
Features - LED flash
Single 8 MP, f/2.0, (wide) 8 MP, f/1.9
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes