Allview V4 Viper vs vivo X20 Plus

Allview V4 Viper

vivo X20 Plus

Network
2G network

GSM 850, 900, 1800, 1900

GSM 900, 1800; CDMA 800 & TD-SCDMA
3G network

W-CDMA 900, 2100

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 7(2600), 8(900), 20(800), 38(2600)

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
HSDPA speed

42.2 Mbps

-
HSUPA speed

11.5 Mbps

-
HSPA speed

-

HSPA
LTE speed

LTE Cat 4, 150 Mbps download, 50 Mbps upload

LTE
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
SIM

Dual SIM (Nano-SIM, dual SIM stand-by)

Hybrid Dual SIM (Nano-SIM, dual stand-by)
Height

145.8 mm

165.3 mm
Width

70.9 mm

80.1 mm
Thickness

8.5 mm

7.5 mm
Weight

138 g

181.5 g
Colors

Blue, Red

Gold, Matte Black, Rose gold

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Direct

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

microUSB 2.0
USB On-The-Go

-

Yes
Bluetooth

v4.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

-

Features
Messaging SMS

-

SMS(threaded view)
Messaging MMS

-

MMS
Messaging Email

-

Email
Messaging Push Email

-

Push Email
Java

-

No
Sensors

Accelerometer, fingerprint, proximity

Fingerprint (rear-mounted), accelerometer, compass, gyro, proximity