Screen size
V4 Viper Pro6.8"
Viva D8Winner: 7.9"+14%
Quick verdict
V4 Viper Pro leads the measured specs 8-3.
Measured wins
V4 Viper Pro
8
spec wins
Overall winner
Ties
7
equal specs
Viva D8
3
spec wins
Screen size
Technology
V4 Viper Pro
GSM / HSPA / LTE
Viva D8
GSM / HSPA
2G bands
V4 Viper Pro
GSM 850 / 900 / 1800 / 1900
Viva D8
GSM 900 / 1800 / 1900
3G bands
V4 Viper Pro
HSDPA 900 / 2100
Viva D8
HSDPA 900 / 2100
4G bands
V4 Viper Pro
1, 3, 7, 20, 38
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
equal specsUSB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Viva D8
-
Speed
V4 Viper Pro
HSPA 21.1/5.76 Mbps, LTE Cat4 150/50 Mbps
Viva D8
HSPA 42.2/11.5 Mbps
Announced
V4 Viper Pro
2020, January. Released 2020, January
Viva D8
2014, January. Released 2014, January
Status
V4 Viper Pro
Discontinued
Viva D8
Discontinued
Dimensions
V4 Viper Pro
171 x 82 x 8.8 mm (6.73 x 3.23 x 0.35 in)
Viva D8
199 x 136.8 x 9.1 mm (7.83 x 5.39 x 0.36 in)
Weight
V4 Viper Pro
191.6 g (6.77 oz)
Viva D8
367 g (12.95 oz)
SIM
V4 Viper Pro
Nano-SIM + Nano-SIM
Viva D8
Micro-SIM
Type
V4 Viper Pro
IPS LCD
Viva D8
IPS LCD
Size
V4 Viper Pro
6.8 inches, 115.4 cm2 (~82.3% screen-to-body ratio)
Viva D8
7.9 inches, 193.3 cm2 (~71.0% screen-to-body ratio)
Resolution
V4 Viper Pro
640 x 1352 pixels, 19:9 ratio (~220 ppi density)
Viva D8
768 x 1024 pixels, 4:3 ratio (~162 ppi density)
OS
V4 Viper Pro
Android 9.0 (Pie)
Viva D8
Android 4.2 (Jelly Bean)
Chipset
V4 Viper Pro
Mediatek MT6739 (28 nm)
Viva D8
-
CPU
V4 Viper Pro
Quad-core 1.3 GHz Cortex-A53
Viva D8
Dual-core 1.3 GHz Cortex-A7
GPU
V4 Viper Pro
PowerVR GE8100
Viva D8
Mali-400
Card slot
V4 Viper Pro
microSDXC (uses shared SIM slot)
Viva D8
microSDHC (dedicated slot)
Internal
V4 Viper Pro
32GB 2GB RAM
Viva D8
4GB 512MB RAM
Other
V4 Viper Pro
eMMC 5.1
Viva D8
-
Dual
V4 Viper Pro
13 MP, AF Auxiliary lens
Viva D8
-
Features
V4 Viper Pro
LED flash
Viva D8
Panorama, HDR
Video
V4 Viper Pro
1080p@30fps
Viva D8
Yes
Single
V4 Viper Pro
-
Viva D8
3.15 MP
Single
V4 Viper Pro
8 MP
Viva D8
1 MP
Video
V4 Viper Pro
1080p@30fps
Viva D8
Loudspeaker
V4 Viper Pro
Yes
Viva D8
Yes
3.5mm jack
V4 Viper Pro
Yes
Viva D8
Yes
WLAN
V4 Viper Pro
Wi-Fi 802.11 b/g/n
Viva D8
Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
V4 Viper Pro
4.0, A2DP
Viva D8
4.0, A2DP, EDR
Positioning
V4 Viper Pro
GPS, GLONASS
Viva D8
GPS
NFC
V4 Viper Pro
No
Viva D8
No
Radio
V4 Viper Pro
FM radio
Viva D8
FM radio, RDS
USB
V4 Viper Pro
microUSB 2.0
Viva D8
microUSB 2.0
Sensors
V4 Viper Pro
Fingerprint (rear-mounted), accelerometer, proximity
Viva D8
Accelerometer
Type
V4 Viper Pro
Li-Po 3500 mAh
Viva D8
Li-Po 4000 mAh, non-removable
Charging
V4 Viper Pro
10W wired
Viva D8
-
Stand-by
V4 Viper Pro
-
Viva D8
Up to 400 h
Talk time
V4 Viper Pro
-
Viva D8
Up to 5 h
Colors
V4 Viper Pro
Dark Grey
Viva D8
Black
SAR EU
V4 Viper Pro
1.20 W/kg (head)
Viva D8
-
Price
V4 Viper Pro
About 170 EUR
Viva D8
-