Samsung Galaxy M21s
#1611
Samsung Galaxy M31
#1547Category Breakdown
Samsung Galaxy M21s
Samsung Galaxy M31
Performance
76.576.7
Camera
62.762.7
Display
76.276.2
Battery
37.737.7
Build
89.188.9
Connectivity
54.262.8
Audio
8.98.9
Overall
56.657.2
Summary
- The Samsung Galaxy M21s and Galaxy M31 share similar build quality, featuring glass front (Gorilla Glass 3) and plastic back and frame, with identical dimensions and weight.
- Both devices have a 6.4-inch Super AMOLED display with a resolution of 1080 x 2340 pixels and 60Hz refresh rate.
- Performance-wise, they utilize the same Exynos 9611 chipset, but the M31 offers more RAM options, providing better multitasking capabilities.
- Camera specifications are largely similar, with both having a 64 MP main sensor, but the M31 includes a macro lens, enhancing its versatility.
- Both models are equipped with a 6000mAh battery and 15W charging, ensuring long usage times.
- The M31 runs Android 10 but is upgradable to Android 12, while the M21s is limited to Android 10.
Side-by-side Specification Comparison
Samsung Galaxy M21s
Samsung Galaxy M31
General
Release Date
2020, November 06
2020, February 25
Announced
2020, November 06
2020, February 25
Description
N/A
Versions: SM-M315F/DS, SM-M315F/DSN
Display
Size
6.4"
6.4"
Type
Super AMOLED, 420 nits (peak)
Super AMOLED, 420 nits (peak)
Resolution
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
PPI
1080
1080
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
Corning Gorilla Glass 3
Corning Gorilla Glass 3
Performance
Chipset
Exynos 9611 (10 nm)
Exynos 9611 (10 nm)
CPU
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)
GPU
Mali-G72 MP3
Mali-G72 MP3
Memory
64GB 4GB RAM, 128GB 6GB RAM
64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM
Expandable Storage
✗
✗
Card Slot
microSDXC (dedicated slot)
microSDXC (dedicated slot)
Camera
Main Camera
64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm5 MP, f/2.2, (depth)
64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm5 MP, f/2.4, (macro)5 MP, f/2.2, (depth)
Main Camera Features
LED flash, panorama, HDR
LED flash, panorama, HDR
Front Camera
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Front Camera Features
HDR
HDR
Video Recording
4K@30fps, 1080p@30fps, gyro-EIS
4K@30fps, 1080p@30fps, gyro-EIS
Selfie Video
1080p@30fps
4K@30fps, 1080p@30fps
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
6000 mAh
6000 mAh
Battery Details
Li-Po 6000 mAh
Li-Po 6000 mAh
Charging Details
15W wired
15W wired
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in)
Weight
191 g
191 g
Materials
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front (Gorilla Glass 3), plastic back, plastic frame
Colors
Blue, Black
Ocean Blue, Space Black, Red
Foldable
✗
✗
SAR
0.38 W/kg (head)
0.52 W/kg (head) 0.69 W/kg (body)
Connectivity
SIM
Nano-SIMNano-SIM + Nano-SIM
Nano-SIM + Nano-SIM
Network
GSM / HSPA / LTE
GSM / HSPA / LTE
Network Speed
HSPA, LTE
HSPA, LTE
5G
✗
✗
4G
✓
✓
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
5.0, A2DP, LE
5.0, A2DP, LE
NFC
✗
✓
USB
USB Type-C 2.0
USB Type-C 2.0
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
GPS, GLONASS, GALILEO, BDS
GPS, GLONASS, GALILEO, BDS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 10, One UI 2.5
Android 10, upgradable to Android 12, One UI 4.1
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (rear-mounted), accelerometer, gyro, compass