| Product |
Samsung Galaxy A31
|
Samsung Galaxy M21 2021
|
| Battery |
| Charging |
15W wired |
15W wired |
| Type |
Li-Po 5000 mAh |
Li-Po 6000 mAh |
| Body |
| Build |
- |
Glass front, plastic back, plastic frame |
| Dimensions |
159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
159 x 75.1 x 9 mm (6.26 x 2.96 x 0.35 in) |
| SIM |
Nano-SIMNano-SIM + Nano-SIM |
Nano-SIM + Nano-SIM |
| Weight |
185 g (6.53 oz) |
192 g (6.77 oz) |
| Comms |
| Bluetooth |
5.0, A2DP, LE |
5.0, A2DP, LE |
| NFC |
Yes (market/region dependent) |
Yes (market/region dependent) |
| Positioning |
GPS, GLONASS, GALILEO, BDS |
GPS, GLONASS, GALILEO, BDS |
| Radio |
FM radio, RDS, recording |
FM radio, RDS, recording |
| USB |
USB Type-C 2.0, OTG |
USB Type-C 2.0 |
| WLAN |
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 |
| Display |
| Resolution |
1080 x 2400 pixels, 20:9 ratio (~411 ppi density) |
1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) |
| Size |
6.4 inches, 98.9 cm2 (~84.9% screen-to-body ratio) |
6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio) |
| Type |
Super AMOLED |
Super AMOLED, 420 nits (peak) |
| Features |
| Sensors |
Fingerprint (under display, optical), accelerometer, gyro, compass |
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| |
Virtual proximity sensing |
- |
| Launch |
| Announced |
2020, March 24 |
2021, July 21 |
| Status |
Available. Released 2020, April 27 |
Available. Released 2021, July 26 |
| Main Camera |
| Features |
LED flash, panorama, HDR |
LED flash, panorama, HDR |
| Quad |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 123˚, (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.4, (macro)
5 MP, f/2.4, (depth) |
- |
| Triple |
- |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
8 MP, f/2.2, 123˚ (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.2, (depth) |
| Video |
1080p@30fps |
4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS |
| Memory |
| Card slot |
microSDXC (dedicated slot) |
microSDXC (dedicated slot) |
| Internal |
64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM |
64GB 4GB RAM, 128GB 6GB RAM |
| |
eMMC 5.1 |
- |
| Misc |
| Colors |
Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White |
Charcoal Black, Arctic Blue |
| Models |
SM-A315F, SM-A315F/DS, SM-A315G/DS, SM-A315G, SM-A315N |
SM-M215G, SM-M215G/DS |
| SAR |
- |
0.47 W/kg (head) |
| SAR EU |
0.49 W/kg (head) 1.68 W/kg (body) |
- |
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 850 / 900 / 1900 / 2100 - SM-A315F |
HSDPA 850 / 900 / 1900 / 2100 |
| 4G bands |
1, 2, 3, 5, 7, 8, 20, 38, 40, 41 - SM-A315F |
1, 3, 5, 7, 8, 20, 38, 40, 41 |
| Speed |
HSPA, LTE |
HSPA, LTE |
| Technology |
GSM / HSPA / LTE |
GSM / HSPA / LTE |
| |
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 38, 40, 41, 66 - SM-A315G |
- |
| Our Tests |
| Battery (old) |
Endurance rating 124h |
- |
| Camera |
Photo / Video |
- |
| Display |
635 nits max brightness (measured) |
- |
| Loudspeaker |
-30.9 LUFS (Below average) |
- |
| Performance |
AnTuTu: 151815 (v8)
GeekBench: 5096 (v4.4), 1216 (v5.1)
GFXBench: 7fps (ES 3.1 onscreen) |
- |
| Platform |
| Chipset |
Mediatek MT6768 Helio P65 (12 nm) |
Exynos 9611 (10 nm) |
| CPU |
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55) |
Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) |
| GPU |
Mali-G52 MC2 |
Mali-G72 MP3 |
| OS |
Android 10, upgradable to Android 12, One UI 4.1 |
Android 11, One UI 3.1 Core |
| Selfie camera |
| Features |
- |
HDR |
| Single |
20 MP, f/2.2, (wide) |
20 MP, f/2.2, 26mm (wide) |
| Video |
1080p@30fps |
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
