Samsung Galaxy M21s vs Samsung Galaxy A31
General Info
| Manufacturer | |
| Samsung | Samsung |
| Announced | |
| November 2020 | 2020, March 24 |
| Status | |
| Available - November 2020 | Coming Soon - April 2020 |
| Colors | |
| Blue, Black | Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) |
159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
| Weight | |
| 191 g (6.74 oz) | 185 g (6.53 oz) |
| SIM Type | |
| Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | |
| GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | |
| HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | |
| LTE | LTE (unspecified) |
| Messaging | |
| Build Features | |
| - Fingerprint Sensor |
- Fingerprint Sensor (under display, optical) |
Display
Hardware and OS
| OS | |
| Android 10 | Android 10.0 |
| User Interface | |
| One UI 2.5 | One UI 2.0 |
| Processor | |
| Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) [Similar] | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55), Mediatek MT6768 Helio P65 (12nm) [Similar] |
| GPU | |
| Mali-G72 MP3 [Similar] | Mali-G52 MC2 [Similar] |
| RAM | |
| 4 GB [Browse Similar] | 6 GB [Browse Similar] |
| Internal Memory | |
| 128 GB | 128 GB |
| External Memory | |
| microSDXC | microSDXC |
Camera
| Rear Camera | |
| 64 MP + 8 MP + 5 MP [Similar] | 48 MP + 8 MP + 5 MP + 5 MP [Similar] |
| Flash | |
| LED Flash | LED flash |
| Features | |
| 64 MP, (wide), PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.2, (depth) Panorama, HDR |
48 MP, f/2.0, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro) 5 MP, f/2.4, (depth) panorama, HDR |
| Video | |
| 4K@30fps, 1080p@30fps, gyro-EIS | 1080p@30fps |
| Front Camera | |
|
32 MP, f/2.4, (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
20 MP, f/2.2, 0.8µm HDR 1080p@30fps [Similar] |
Multimedia
| 3.5mm Jack | |
| Radio | |
| FM radio, RDS, recording | - |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Yes | Yes |
| Edge | |
| Yes | Yes |
| 3G | |
| HSPA 42.2/5.76 Mbps, LTE-A | HSPA, LTE-A |
| Bluetooth | |
| 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | |
| Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | |
| USB Type-C 2.0 | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| GPS | |
| Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | |
| Yes | Yes |
User Memory
| Internal | |
| 128 GB, 4 GB RAM or 64 GB, 4 GB RAM | 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) |
| Expandable Storage | |
| microSDXC | microSDXC |
| USB OTG | |
| Not Supported | Supported |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| Magnetic-field Sensor (Compass) | |
| Gyroscope Sensor | |
| NFC | |
Battery
| Type | |
| Non-removable Li-Po Battery Fast battery charging 15W |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | |
| 6000 mAh | 5000 mAh |
| Stand by | |
| - | - |
| Talk Time | |
| - | - |