Screen size
equal specsV3 Viper5.5"
X4 Soul5.5"
Quick verdict
X4 Soul leads the measured specs 6-2.
Measured wins
V3 Viper
2
spec wins
Ties
9
equal specs
X4 Soul
6
spec wins
Overall winner
Screen size
equal specsTechnology
V3 Viper
GSM / HSPA / LTE
X4 Soul
GSM / HSPA / LTE
2G bands
V3 Viper
GSM 850 / 900 / 1800 / 1900
X4 Soul
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
V3 Viper
HSDPA 850 / 900 / 1900 / 2100
X4 Soul
HSDPA 850 / 900 / 1900 / 2100
4G bands
V3 Viper
1, 3, 5, 8, 20, 38, 39, 40
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
equal specsBattery
equal specsWired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
X4 Soul
1, 3, 7, 8, 20, 38, 39, 40, 41
Speed
V3 Viper
HSPA 21.1/5.76 Mbps, LTE Cat4 150/50 Mbps
X4 Soul
HSPA 21.1/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Announced
V3 Viper
2018, January. Released 2018, February
X4 Soul
2017, February. Released 2017, February
Status
V3 Viper
Discontinued
X4 Soul
Discontinued
Dimensions
V3 Viper
148.3 x 71.8 x 8.1 mm (5.84 x 2.83 x 0.32 in)
X4 Soul
154.2 x 76.4 x 7.4 mm (6.07 x 3.01 x 0.29 in)
Weight
V3 Viper
143.6 g (5.08 oz)
X4 Soul
167.5 g (5.93 oz)
SIM
V3 Viper
Nano-SIM + Micro-SIM
X4 Soul
Nano-SIM + Nano-SIM
Type
V3 Viper
IPS LCD
X4 Soul
IPS LCD
Size
V3 Viper
5.5 inches, 78.1 cm2 (~73.3% screen-to-body ratio)
X4 Soul
5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio)
Resolution
V3 Viper
720 x 1440 pixels, 18:9 ratio (~293 ppi density)
X4 Soul
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Protection
V3 Viper
Corning Gorilla Glass 3
X4 Soul
Corning Gorilla Glass (unspecified version)
OS
V3 Viper
Android 8.0 (Oreo)
X4 Soul
Android 6.0 (Marshmallow)
Chipset
V3 Viper
Mediatek MT6737 (28 nm)
X4 Soul
Mediatek MT6755 Helio P10 (28 nm)
CPU
V3 Viper
Quad-core 1.3 GHz Cortex-A53
X4 Soul
Octa-core (4x2.0 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU
V3 Viper
Mali-T720MP2
X4 Soul
Mali-T860MP2
Card slot
V3 Viper
microSDXC (uses shared SIM slot)
X4 Soul
microSDXC (uses shared SIM slot)
Internal
V3 Viper
32GB 3GB RAM
X4 Soul
64GB 4GB RAM
Other
V3 Viper
eMMC 5.0
X4 Soul
eMMC 5.1
Single
V3 Viper
13 MP, AF
X4 Soul
-
Features
V3 Viper
LED flash, HDR
X4 Soul
LED flash, panorama, HDR
Video
V3 Viper
1080p@30fps
X4 Soul
1080p@30fps
Dual
V3 Viper
-
X4 Soul
13 MP, 1/3.1", 1.12µm, PDAF Auxiliary lens
Single
V3 Viper
13 MP
X4 Soul
13 MP
Features
V3 Viper
LED flash
X4 Soul
-
Video
V3 Viper
X4 Soul
1080p@30fps
Loudspeaker
V3 Viper
Yes
X4 Soul
Yes
3.5mm jack
V3 Viper
Yes
X4 Soul
Yes
WLAN
V3 Viper
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
X4 Soul
Wi-Fi 802.11 a/b/g/n
Bluetooth
V3 Viper
4.2, A2DP, LE
X4 Soul
4.0, A2DP, EDR, LE
Positioning
V3 Viper
GPS
X4 Soul
GPS
NFC
V3 Viper
No
X4 Soul
No
Infrared port
V3 Viper
Yes
X4 Soul
-
Radio
V3 Viper
FM radio
X4 Soul
FM radio
USB
V3 Viper
microUSB 2.0
X4 Soul
microUSB 2.0
Sensors
V3 Viper
Fingerprint (rear-mounted), accelerometer, proximity, compass
X4 Soul
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
Type
V3 Viper
Li-Po 3000 mAh, non-removable
X4 Soul
Li-Po 3000 mAh, non-removable
Stand-by
V3 Viper
-
X4 Soul
Up to 428 h (3G)
Talk time
V3 Viper
-
X4 Soul
Up to 14 h 30 min (3G)
Colors
V3 Viper
Black, Silver, Gold
X4 Soul
Black
SAR EU
V3 Viper
1.26 W/kg (head)
X4 Soul
1.65 W/kg (head)
Price
V3 Viper
About 220 EUR
X4 Soul
About 420 EUR