Allview V4 Viper vs UMIDIGI Crystal Pro

Allview V4 Viper

UMIDIGI Crystal Pro

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

W-CDMA 900, 2100

HSDPA 900, 2100
4G network

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

LTE frequency band 1(2100), 3(1800), 7(2600), 18(800)
HSDPA speed

42.2 Mbps

-
HSUPA speed

11.5 Mbps

-
LTE speed

LTE Cat 4, 150 Mbps download, 50 Mbps upload

LTE, Cat4, 150 Mbps download, 51 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

-

Metal, glass
SIM

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

Dual SIM (Nano-SIM/Nano-SIM(microSD))
Height

145.8 mm

141.3 mm
Width

70.9 mm

74.8 mm
Thickness

8.5 mm

8.1 mm
Weight

138 g

180 g
Colors

Blue, Red

Black

Main camera
Camera type

Dual

Dual
Main camera

8 MP

13 MP, 1.127 µm
0.3 MP

5 MP
Primary camera resolution

-

4160 x 3120 pixels
Primary camera video

1080p@30fps

1080@30fps
Primary camera flash

LED flash

LED flash
Primary camera phase detection autofocus

-

phase detection autofocus
Camera features

-

Autofocus, continuous shooting, geotagging, panorama, HDR, touch focus, face detection, white balance settings, ISO settings, exposure compensation, self-timer, scene-mode

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5 GHz
WLAN WiFi Hotspot

Yes

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

Type-C reversible connector
USB On-The-Go

-

Yes
Bluetooth

v4.1

v4.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes