Samsung Galaxy M21
#1535
Samsung Galaxy M31
#1483Category Breakdown
Samsung Galaxy M21
Samsung Galaxy M31
Performance
62.562.5
Camera
47.948.7
Display
79.579.5
Battery
63.563.5
Build
77.877.8
Overall
63.964.1
Summary
- The Samsung Galaxy M21 and M31 share similar build quality with glass front and plastic back, but the M31 is slightly heavier at 191g compared to the M21's 188g.
- Both feature a 6.4" Super AMOLED display with the same resolution and refresh rate.
- In terms of performance, both are equipped with the Exynos 9611 chipset, but the M31 offers more RAM options, including an 8GB variant.
- The M31's camera system is superior, featuring a 64 MP main sensor versus the M21's 48 MP, and a higher resolution 32 MP selfie camera compared to the M21's 20 MP.
- Both models have a 6000 mAh battery and run on Android 10, with the M31 upgradable to Android 12, while the M21 can be upgraded to Android 11.
Side-by-side Specification Comparison
Samsung Galaxy M21
Samsung Galaxy M31
General
Release Date
2020, March 18
2020, February 25
Announced
2020, March 18
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
Peak Brightness
N/A
N/A
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
48 MP
64 MP
Main Camera Details
48 MP, f/2.0, 26mm (wide), 1/2.0", 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)
Front Camera
20 MP
32 MP
Front Camera Details
20 MP, f/2.2, 26mm (wide)
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video Recording
4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS
4K@30fps, 1080p@30fps, gyro-EIS
Selfie Video
1080p@30fps
4K@30fps, 1080p@30fps
OIS
✗
✗
Night Mode
✗
✗
RAW 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 & Design
Dimensions
159 x 75.1 x 8.9 mm (6.26 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
188 g
191 g
Materials
Glass front (Gorilla Glass 3), plastic back, plastic frame
Glass front (Gorilla Glass 3), plastic back, plastic frame
Water Resistance
N/A
N/A
Colors
Midnight Blue, Raven Black
Ocean Blue, Space Black, Red
Foldable
✗
✗
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
Software
Operating System
Android 10, upgradable to Android 11, One UI 3.1 Core
Android 10, upgradable to Android 12, One UI 4.1
OS Version
Android 10, upgradable to Android 11, One UI 3.1 Core
Android 10, upgradable to Android 12, One UI 4.1
Security
Fingerprint
✓
✓
Face Unlock
✗
✗
Sensors
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Fingerprint (rear-mounted), accelerometer, gyro, compass
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes