Screen size
G51SWinner: 6.4"+14%
Vivo 85.5"
Quick verdict
Vivo 8 leads the measured specs 10-2.
Measured wins
G51S
2
spec wins
Ties
6
equal specs
Vivo 8
10
spec wins
Overall winner
Screen size
Technology
G51S
GSM / HSPA / LTE
Vivo 8
GSM / HSPA / LTE
2G bands
G51S
GSM 850 / 900 / 1800 / 1900
Vivo 8
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
G51S
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
Vivo 8
HSDPA 850 / 1700(AWS) / 1900 / 2100
4G bands
G51S
1, 2, 3, 4, 5, 7, 12, 17, 28
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Vivo 8
2, 4, 7, 12, 17, 1, 2, 3, 4, 5, 7, 28
Speed
G51S
HSPA, LTE
Vivo 8
HSPA 42.2/11.5 Mbps, LTE (2CA) Cat6 300/50 Mbps
Announced
G51S
2022, January. Released 2022, January
Vivo 8
2017, August. Released 2017, August
Status
G51S
Discontinued
Vivo 8
Discontinued
Dimensions
G51S
162.4 x 77.5 x 9 mm (6.39 x 3.05 x 0.35 in)
Vivo 8
154.5 x 76.5 x 8.3 mm (6.08 x 3.01 x 0.33 in)
Weight
G51S
185 g (6.53 oz)
Vivo 8
180 g (6.35 oz)
SIM
G51S
Vivo 8
Nano-SIM + Micro-SIM
Type
G51S
IPS LCD
Vivo 8
IPS LCD
Size
G51S
6.4 inches, 100.5 cm2 (~79.9% screen-to-body ratio)
Vivo 8
5.5 inches, 83.4 cm2 (~70.6% screen-to-body ratio)
Resolution
G51S
720 x 1560 pixels, 19.5:9 ratio (~268 ppi density)
Vivo 8
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Protection
G51S
-
Vivo 8
Corning Gorilla Glass 3
OS
G51S
Android 11 (Go edition)
Vivo 8
Android 7.0 (Nougat)
CPU
G51S
Octa-core 1.6 GHz Cortex-A55
Vivo 8
Octa-core (4x2.0 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
Chipset
G51S
-
Vivo 8
Mediatek MT6755 Helio P10 (28 nm)
GPU
G51S
-
Vivo 8
Mali-T860MP2
Card slot
G51S
microSDXC
Vivo 8
microSDXC
Internal
G51S
32GB 2GB RAM
Vivo 8
64GB 4GB RAM
Other
G51S
eMMC 5.1
Vivo 8
eMMC 5.1
Dual
G51S
13 MP Auxiliary lens
Vivo 8
-
Features
G51S
LED flash
Vivo 8
LED flash, HDR
Video
G51S
1080p@30fps
Vivo 8
1080p@30fps
Single
G51S
-
Vivo 8
13 MP, f/2.0, 1/3.1", 1.12µm, PDAF
Single
G51S
8 MP
Vivo 8
16 MP, f/2.2, 26mm (wide), 1/3.06", 1.0µm
Video
G51S
720p@30fps
Vivo 8
Features
G51S
-
Vivo 8
LED flash
Loudspeaker
G51S
Yes
Vivo 8
Yes
3.5mm jack
G51S
Yes
Vivo 8
Yes
WLAN
G51S
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Vivo 8
Wi-Fi 802.11 b/g/n/ac, Wi-Fi Direct
Bluetooth
G51S
4.2, A2DP, LE
Vivo 8
4.0, A2DP
Positioning
G51S
GPS
Vivo 8
GPS
NFC
G51S
No
Vivo 8
No
Radio
G51S
FM radio
Vivo 8
FM radio
USB
G51S
USB Type-C 2.0
Vivo 8
microUSB 2.0, OTG
Sensors
G51S
Fingerprint (rear-mounted), accelerometer, proximity
Vivo 8
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Type
G51S
Li-Po 4000 mAh
Vivo 8
Li-Po 4010 mAh, non-removable
Charging
G51S
-
Vivo 8
10W wired
Stand-by
G51S
-
Vivo 8
Up to 750 h (2G) / Up to 700 h (3G)
Talk time
G51S
-
Vivo 8
Up to 28 h (2G) / Up to 22 h (3G)
Colors
G51S
Bronze, Gradient Blue, Green, Red
Vivo 8
Black, Gold
Price
G51S
About 80 EUR
Vivo 8
About 250 EUR