UMIDIGI A3S vs vivo Z1

Network
2G network

GSM 850, 900, 1800, 1900

GSM 850, 900, 1800, 1900; CDMA 800 & TD-SCDMA
3G network

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

HSDPA 850, 900, 1900, 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 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
HSDPA speed

-

42.2 Mbps
HSUPA speed

-

5.76 Mbps
LTE speed

LTE Cat 4, 150 Mbps download, 51 Mbps upload

-
LTE-A speed

-

LTE-A, (2CA) Cat6, 300 Mbps download, 50 Mbps upload
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

Metal, glass

Plastic back
SIM

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

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

153.7 mm

154.8 mm
Width

72.9 mm

75.1 mm
Thickness

8.45 mm

7.9 mm
Weight

197 g

149.3 g
Colors

Green, Grey

Black, Blue, Red

Main camera
Camera type

Dual

Dual
Main camera

16 MP, f/2.0 , 0.26" , 1.132 µm

13 MP
5 MP

2 MP
Primary camera resolution

4608 x 3456 pixels

4160 x 3120 pixels
Primary camera video

1080p@30fps

2160p@30fps, 1080p@30fps
Primary camera Autofocus

-

phase detection autofocus
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

Geo-tagging, HDR, face detection, panorama, touch focus

Features
Messaging SMS

-

SMS(threaded view)
Messaging MMS

-

MMS
Messaging Email

-

Email
Messaging Push Email

-

Push Email
Sensors

Accelerometer, compass, fingerprint, gyroscope, proximity, light

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