Xiaomi Mi 6 vs vivo Z3

Network
2G network

GSM 850, 900, 1800, 1900; CDMA 800

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

HSDPA 850, 900, 1900, 2100; CDMA2000 1xEV-DO

HSDPA 850, 900, 2100
4G network

LTE frequency band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 39(1900), 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

-
EV-DO speed

-

3.1 Mbps download, 1.8 Mbps upload
LTE speed

-

LTE, Cat15, 798 Mbps download, 226 Mbps upload
LTE-A speed

LTE-A

-
GPRS

Yes

Yes
EDGE

Yes

Yes

Hardware
CPU

Octa-core

Octa-core
CPU

Quad-core 2.45 GHz Kryo

Dual-core 2.0 / 2.2 GHz Kryo 360 Gold
CPU(second)

quad-core 1.9 GHz Kryo

Hexa-core 1.7 / 2.2 GHz Kryo 360 Silver
Chipset

Qualcomm MSM8998 Snapdragon 835

Qualcomm SDM670 Snapdragon 670 / Qualcomm SDM710 Snapdragon 710
GPU

Adreno 540

Adreno 615 / Adreno 616
Memory RAM

6 GB

4, 6 GB
Internal storage

64, 128 GB

64, 128 GB
Memory card

microSD, microSDHC, microSDXC
Memory card max

-

256 GB

Main camera
Camera type

Dual

Dual
Main camera

12 MP, f/1.8 , 27 mm

16 MP, f/2.0
12 MP, f/2.6 , 52 mm

2 MP, f/2.4
Primary camera resolution

-

4608 x 3456 pixels
Primary camera video

2160p@30fps, 1080p@30fps, 720p@120fps

1080p@30fps
Primary camera Autofocus

phase detection autofocus

-
Primary camera flash

dual-LED (dual tone) flash

dual-LED flash
Primary camera optical image stabilization

4-axis optical image stabilization

-
Primary camera phase detection autofocus

-

phase detection autofocus
Camera features

1.25 µm @ 27mm & 1.0 µm @ 52mm pixel size, 1/2.9" sensor size, HDR, face detection, geo-tagging, panorama, touch focus

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, 802.11ac

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

Yes

Yes
WLAN WiFi Direct

Yes

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

Yes

Yes
WLAN DLNA

Yes

-
USB

Type-C reversible connector

microUSB 2.0
USB On-The-Go

-

Yes
Bluetooth

v5.0

v4.2
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth EDR

-

Yes
NFC

Yes

-
GPS

Yes, with A-GPS

Yes, with A-GPS
GLONASS

Yes

Yes
Beidou

-

Yes
BDS

Yes

-

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging IM

IM

-
Messaging Push Mail

Push Mail

-
Java

No

-
Sensors

Fingerprint (front-mounted), accelerometer, barometer, compass, gyro, proximity

Accelerometer, compass, fingerprint, gyroscope, infrared face recognition, light, proximity