Samsung M400 vs Samsung Galaxy M31

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Display

Size

2.4 inches
6.4 inches

Resolution

320 x 240 pixels,
167 PPI
2340 x 1080 pixels, 19.5:9 ratio,
403 PPI

Technology

LCD
Super AMOLED

Screen-to-body

36.18 %
83.97 %

Peak brightness

 
420 cd/m2 (nit)

Features

 
Scratch-resistant glass (Corning Gorilla Glass 3), Ambient light sensor, Proximity sensor

Additional display

1.1 inches, CSTN
 

Hardware

System chip

Qualcomm QSC6155
Exynos 9611

Processor

Single core, 480 MHz
Octa-core, 2300 MHz, Arm Cortex-A73 and Arm Cortex-A53, 64-bit, 10 nm

GPU

 
Mali-G72 MP3

RAM

0.1GB
6GB LPDDR4

ROM

256 MB
 

Internal storage

 
64GB (UFS 2.1), available to use: 49 GB

Storage expansion

 
microSDXC up to 512 GB

OS

 
Android (10), Samsung One UI

Battery

Capacity

1000 mAh
6000 mAh

Type

Li - Ion, User replaceable
Li - Polymer, Not user replaceable

Charging

 
Fast charging

Max charge speed

 
Wired: 15.0W

Camera

Rear

Single camera
Quad camera

Main camera

1.3 MP
64 MP (PDAF)

Specifications

 
Aperture size: F1.8; Focal length: 26 mm; Sensor size: 1/1.7"; Pixel size: 0.8 μm

Second camera

 
8 MP (Ultra-wide)

Specifications

 
Aperture size: F2.2; Focal Length: 12 mm; Sensor size: 1/4"; Pixel size: 1.12 μm

Third camera

 
5 MP (Macro)

Specifications

 
Aperture size: F2.2; Focal Length: 25 mm; Sensor size: 1/5"; Pixel size: 1.12 μm

Fourth camera

 
5 MP (Depth information)

Specifications

 
Aperture size: F2.2

Video recording

 
3840x2160 (4K UHD) (30 fps), 1920x1080 (Full HD), 1280x720 (HD) (240 fps)

Features

 
Hyperlapse, EIS

Front

 
32 MP (HDR, Slow-motion videos)

Design

Dimensions

3.84 x 1.99 x 0.72 inches (98 x 51 x 18 mm)
6.27 x 2.96 x 0.35 inches (159.2 x 75.1 x 8.9 mm)

Weight

3.70 oz (104.9 g)
the average is 6.2 oz (176 g)
6.74 oz (191.0 g)
the average is 6.2 oz (176 g)

Materials

 
Back: Plastic; Frame: Plastic

Biometrics

 
2D Face unlock, Fingerprint (touch)

Features

Numeric keypad, Soft keys, D-Pad
 

Colors

 
Blue, Black, Red

Cellular

LTE (FDD)

 
Bands 1(2100), 2(1900), 3(1800), 4(AWS-1), 5(850), 7(2600), 8(900), 12(700 a), 13(700 c), 17(700 b), 20(800 DD), 26(850+), 28(700 APT), 66(AWS-3)

LTE (TDD)

 
Bands 38(2600), 40(2300), 41(2600+)

UMTS

 
850, 900, 1700/2100, 1900, 2100 MHz

Data Speed

 
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s

Dual SIM

 
Yes

SIM type

 
Nano SIM

VoLTE

 
Yes

Multimedia

Headphones

3.5mm jack
3.5mm jack

Speakers

 
Earpiece, Loudspeaker

Features

 
Dolby Atmos

Screen mirroring

 
Wireless screen share

Radio

 
FM

Additional microphone(s)

 
for Noise cancellation

Connectivity & Features

Bluetooth

3.0
5.0

Wi-Fi

 
802.11 a, b, g, n, ac, dual-band; Wi-Fi Direct, Hotspot

USB

 
Type-C (reversible), USB 2.0

Features

 
Charging

Location

GPS
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning

Sensors

 
Accelerometer, Gyroscope, Compass

Other

 
NFC

Phone features

Notifications

Polyphonic ringtones, Vibration, Silent mode, Speakerphone
 

Other features

Voice dialing, Voice recording
 

Regulatory Approval

FCC approval

 
 

Date approved

Jul 25, 2012
Feb 07, 2020

FCC ID value: A3LSPHM400 link
FCC ID value: A3LSMM315F link

Measured SAR

 
 

Head

0.66 W/kg
0.42 W/kg

Body

0.64 W/kg
0.41 W/kg

Simultaneous Transmission

 
1.54 W/kg

Wireless Router

 
0.74 W/kg

Buyers information

In The Box

 
15W fast charger, Data cable, Ejection pin, User Manual

Price

 
€ 240
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