Samsung Galaxy M31 128GB Specifications

Key Specs General Performance Display Design Rear Camera Front Camera Battery Storage Network & Connectivity Multimedia Sensors

Key Specs
RAM & Storage 6 GB RAM + 64 GB
6 GB RAM + 128 GB
8 GB RAM + 128 GB
Processor Samsung Exynos 9 Octa 9611
Rear Camera 64 MP + 8 MP + 5 MP + 5 MP
Front Camera 32 MP
Battery 6000 mAh
Display 6.4 inches (16.26 cm)

General
Launch Date April 6, 2020 (Official)
Operating System Android v10 (Q)
Custom UI Samsung One UI

Performance

(Good)
Chipset Samsung Exynos 9 Octa 9611
Processor Octa core (2.3 GHz, Quad core, Cortex A73 + 1.7 GHz, Quad core, Cortex A53)
Architecture 64 bit
Fabrication 10 nm
Graphics (GPU) Mali-G72 MP3
RAM 6 GB / 8 GB
RAM Type LPDDR4X
Performance Test Results icon View AnTuTu Score
AnTuTu Score 194,497
Bootup Time 26.0 s
Speed Test (Antutu Score)
The higher, the better
Moto G57 Power 817,331 
realme P3 764,410 
vivo T4X 685,052 
Moto G86 Power 677,110 
realme P4R 5G 603,216 
*Group: 15-21k Phones
See comparison with other phones
Bootup Time
The lower, the better
Lava Play Ultra 15 s
Moto G86 Power 23 s
vivo T4X 26 s
Samsung Galaxy M31 128GB 26 s
realme P3 27 s
realme P4R 5G 33 s
realme C100X 78 s
*Group: 15-21k Phones
See comparison with other phones
Gaming Test Results icon
Battery Drain* 6.0 %
Heating* 48.3 %
* after 30 mins of gaming
Battery Drain*
The lower, the better
iQOO Z10 3 %
Moto G86 Power 5 %
realme P3 6 %
vivo T4X 6 %
OPPO K14x 5G 6 %
Samsung Galaxy M31 128GB 6 %
Alcatel V3 Ultra 10 %
*Group: 15-21k Phones
See comparison with other phones
Heating*
The lower, the better
Xiaomi Redmi 15C 6.3 %
Moto G86 Power 7.3 %
OPPO K14x 5G 13.1 %
realme P3 22.7 %
vivo T4X 24.8 %
Samsung Galaxy M31 128GB 48.3 %
OPPO F29 50.2 %
*Group: 15-21k Phones
See comparison with other phones
Benchmark Screenshots
Benchmarks
AnTuTu Benchmark
Benchmarks
Graphics Benchmark
Benchmarks
GeekBench5 Benchmark
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Display

(Best In Class)
Display Type Super AMOLED
Screen Size 6.4 inches (16.26 cm)
Resolution 1080x2340 px (FHD+)
Aspect Ratio 19.5:9
Pixel Density 403 ppi
Screen to Body Ratio (calculated) 83.92 %
Screen Protection Corning Gorilla
Bezel-less Display Yes with notch
UI Screenshots
UI Screenshot
Lock Screen
UI Screenshot
Home Screen
UI Screenshot
Screen With Widgets
UI Screenshot
Dialer Screen
UI Screenshot
App Drawer
UI Screenshot
Notification Panel
UI Screenshot
Quick Settings Panel
UI Screenshot
Settings Screen
UI Screenshot
OS Version
UI Screenshot
Storage
UI Screenshot
Battery
UI Screenshot
Camera On
UI Screenshot
Camera Options
UI Screenshot
Camera Modes
UI Screenshot
Camera Settings
UI Screenshot
Picture Size Options
UI Screenshot
Video Size Options

Design
Height 159.2 mm
Width 75.1 mm
Thickness 8.9 mm
Weight 191 grams
Build Material Back: Plastic
Click to View Click to View

Rear Camera

(Very Good)
Resolution
CameraMPLens FeaturesApertureSensor SizeSensor NamePixel SizeZoomFocal Length
Primary64 MPf/1.81/1.7" Samsung S5KGW10.8µmupto 8x Digital Zoom26 mm
Secondary8 MPUltra-Wide Anglef/2.21/4.0" 1.12µm12 mm
Tertiary5 MPMacrof/2.41/5.0" 1.12µm25 mm
Quaternary5 MPDepthf/2.2
Autofocus Yes, Phase Detection Autofocus
OIS No
Flash Yes, LED Flash
Image Resolution 9000 x 7000 Pixels
Settings Exposure compensation, ISO control
Shooting Modes Continuous Shooting
High Dynamic Range mode (HDR)
Camera Features 8 x Digital Zoom
Auto Flash
Face detection
Touch to focus
Video Recording 4k @30 fps
Full HD @30 fps
HD @240 fps
Rear Camera Samples
Rear Camera
Portrait Shot
Rear Camera
Night Mode OFF
Rear Camera
Close Up
Rear Camera
Low Light
Rear Camera
Low Light With Flash
Rear Camera
Colour Variance
Rear Camera
Daylight Auto / HDR OFF
Rear Camera
Daylight / HDR ON
Rear Camera
AI OFF
Rear Camera
AI ON

Samsung Galaxy M31 128GB Compare Camera Samples

camera-sample-1
Samsung Galaxy M31 128GB 64 MP
VS
camera-sample-2
realme P3 50 MP
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3
Samsung Galaxy M31 128GB
realme P3

Front Camera

(Very Good)
Resolution
CameraMPApertureSensor SizeSensor NamePixel SizeFocal Length
Primary32 MPf/2.01/2.8"Sony Exmor RS IMX6160.8µm26 mm
Autofocus No
Flash No
Video Recording Full HD @30 fps
Front Camera Samples
Front Camera
Selfie
Front Camera
Selfie Portrait
Front Camera
Selfie Low Light
Front Camera
Selfie Low Light With Flash

Battery

(Very Good)
Capacity 6000 mAh
Battery Type Li-ion
TalkTime Up to 48 Hours(4G)
Quick Charging Yes, 15W Fast Charging
Battery Test Results icon
Battery Life (PC Mark) 15h 43m
Charging Time (20% to 100%) 2h 1m 8s
Battery Life (PC Mark)
The higher, the better
POCO M8x 5G 22.3 hrs
realme P4R 5G 15.9 hrs
Samsung Galaxy M31 128GB 15.7 hrs
vivo T4X 14.2 hrs
realme P3 12.7 hrs
Moto G86 Power 11.1 hrs
Motorola Edge 60 Stylus 8.8 hrs
*Group: 15-21k Phones
See comparison with other phones
Charging Time (20% to 100%)
The lower, the better
OPPO F29 0.1 hrs
realme P3 1.0 hrs
vivo T4X 1.1 hrs
Moto G86 Power 1.2 hrs
realme P4R 5G 1.9 hrs
Samsung Galaxy M31 128GB 2.0 hrs
realme C83 5G 2.5 hrs
*Group: 15-21k Phones
See comparison with other phones

Storage
Internal Storage 64 GB / 128 GB
Storage Type UFS 2.1
Expandable Storage Yes, Up to 512 GB

Network & Connectivity
SIM Slot(s) Dual SIM
SIM Type SIM1: Nano, SIM2: Nano
Network Support 5G Not Supported, 4G
VoLTE Yes
SIM 1 4G bands
Expand
Bands Features
4G bandsTD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26)
SIM 2 4G bands
Expand
Bands Features
4G bandsTD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41)
FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) / 700(band 28) / 1900(band 2) / 1700(band 4) / 850(band 5) / 700(band 13) / 700(band 17) / 800(band 20) / 850(band 26)
SAR Value Head: 0.383 W/kg
Wi-Fi Yes, Wi-Fi 5 (802.11 b/g/n/ac) 5GHz
Wi-Fi Features Wi-Fi Direct, Mobile Hotspot
Bluetooth Yes, v5.0
GPS Yes with A-GPS, Glonass
NFC No

Multimedia
Audio Jack 3.5 mm
Audio Features Dolby Atmos

Sensors
Fingerprint Sensor Yes
Fingerprint Sensor Position Rear
Other Sensors Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope
Mobiles› Samsung Galaxy M31 128GB› Samsung Galaxy M31 128GB Specifications
Updated on: September 10, 2026