UMIDIGI A3X vs Vertex Impress Bear

UMIDIGI A3X

Vertex Impress Bear

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900
3G network

W-CDMA 850, 900, 1700, 1900, 2100

HSDPA 900, 2100
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 4(1700), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(850), 19(850), 20(800), 26(850), 28(700), 38(2600), 40(2300), 41(2500)

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

LTE Cat 4, 150 Mbps download, 51 Mbps upload

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

Yes

Yes
EDGE

Yes

Yes

Design
Build

Metal, glass

Plastic
SIM

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

Dual SIM (Micro-SIM, dual stand-by)
Height

147.2 mm

143 mm
Width

70.2 mm

72 mm
Thickness

8.7 mm

10.3 mm
Weight

184 g

147 g
Colors

Green, Grey

Black, Blue, Gold

Main camera
Camera type

Dual

-
Main camera

16 MP, f/2.0 , 0.26" , 1.132 µm

8 MP
16 MP
5 MP
Primary camera resolution

4608 x 3456 pixels

3264 x 2448 pixels
Primary camera video

1080p@30fps

720p@30fps
Primary camera flash

dual LED flash

LED flash
Camera features

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

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

Connectivity
WLAN

Wi-Fi 802.11a, 802.11b, 802.11g, 802.11n, 802.11n 5Ghz, 802.11ac

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

Yes

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

Yes

-
WLAN WiFi Dual Band

Yes

-
USB

microUSB 2.0

microUSB 2.0
USB On-The-Go

Yes

-
Bluetooth

v5.0

v4.0
Bluetooth A2DP

Yes

Yes
bluetooth HID

Yes

-
bluetooth LE

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

-
GALILEO

Yes

-
Beidou

Yes

-