Cat S31 vs Xiaomi Mi Mix Alpha

Network
2G network

GSM 850, 900, 1800, 1900

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

HSDPA 850, 900, 1900, 2100 - EU; HSDPA 850, 900, 1700(AWS), 1900, 2100 - USA

HSDPA 850, 900, 1900, 2100
4G network

LTE frequency band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800) - EU; LTE frequency band 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 17(700) - USA

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

-

42 Mbps
HSUPA speed

-

5.76 Mbps
EV-DO speed

-

3.1 Mbps download, 1.8 Mbps upload
LTE speed

LTE, Cat4, 150 Mbps download, 50 Mbps upload

LTE-A (7CA) Cat20, 2048 Mbps download, 150 Mbps upload
5G speed

-

2+ Gbps download
GPRS

Yes

Yes
EDGE

Yes

Yes

Design
Build

-

Titanium alloy frame, ceramic back strip
SIM

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

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

146 mm

154.4 mm
Width

74.4 mm

72.3 mm
Thickness

12.6 mm

10.4 mm
Weight

200 g

241 g
Waterproof

IP68, 1.2 m and 35 minutes

-
Dust proof

IP68

-
MIL-STD-810G

Yes - dust, humidity, rain, salt, vibration, solar radiation, transport and thermal shock resistant

-
Colors

Black

Black

Display
Display type

TFT capacitive touchscreen

Flexible Super AMOLED capacitive touchscreen
Physical size

4.7 inches

7.92 inches
Resolution

720 x 1280 pixels

2088 x 2250 pixels
Pixel density

312 ppi

388 ppi
Display colors

-

16777216
Protection

Corning Gorilla Glass 3

Scratch resistant
Multitouch

Yes

Yes
Display features

-

Wraparound display

Main camera
Camera type

-

Triple
Main camera

8 MP

108 MP, f/1.7 , 1/1.33" , 0.8 µm
12 MP, f/2.0 , 1/2.55" , 1.4 µm
20 MP, f/2.2 , 13 mm, 1/2.8" , 1.0 µm
Primary camera resolution

-

12032 x 9024 pixels
Primary camera video

720p@30fps

3240p@30fps, 2160p@30/60fps, 1080p@30/120/240fps, 1080p@960fps
Primary camera Autofocus

autofocus

-
Primary camera flash

LED flash

dual-LED flash
Camera features

Geo-tagging, face detection, touch focus

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

Connectivity
WLAN

Wi-Fi 802.11b, 802.11g, 802.11n

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

Yes

Yes
WLAN WiFi Direct

-

Yes
Wi-Fi display

-

Yes
WLAN WiFi Dual Band

-

Yes
USB

microUSB 2.0

Type-C 1.0 reversible connector
USB On-The-Go

Yes

Yes
Bluetooth

v4.1

v5.0
Bluetooth A2DP

Yes

Yes
bluetooth LE

Yes

Yes
Bluetooth AptX

-

aptX HD
GPS

Yes, with A-GPS

Yes, with dual-band A-GPS
GLONASS

Yes

Yes
GALILEO

-

Yes
Beidou

-

Yes
BDS

Yes

-
QZSS

-

Yes

Features
Messaging SMS

SMS(threaded view)

-
Messaging MMS

MMS

-
Messaging Email

Email

-
Messaging IM

IM

-
Messaging Push Email

Push Email

-
Java

No

-
Sensors

Accelerometer, compass, proximity

Accelerometer, barometer, compass, fingerprint, gyroscope, proximity