| Price In Bangladesh |
| Box Price |
| Box Price |
TK 23,999/- |
TK 16,900/- |
| USD Price |
| USD Price |
$ 313/- |
$ 199/- |
| Brand |
| Brand |
Samsung Mobile |
Samsung Mobile |
| Model No |
| Model No |
Galaxy A31 |
Galaxy A21 |
| Launch |
| Launch Date |
| Launch Date |
2020, May 01 |
2020, February 01 |
| Website |
| Website |
Samsung Galaxy A31 Official Website |
Samsung Galaxy A21 Official Website |
| Wikipedia |
| Wikipedia |
Samsung Galaxy A21 Wikipedia |
Samsung Galaxy A21 Wikipedia |
| Network |
| Technology |
| Technology |
GSM / HSPA / LTE |
GSM / CDMA / HSPA / EVDO / LTE |
| 2G bands |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only)
CDMA 800 / 1900 |
| 3G bands |
| 3G bands |
HSDPA 850 / 900 / 1900 / 2100 - SM-A315F
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - SM-A315G |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA
CDMA2000 1xEV-DO |
| 4G bands |
| 4G bands |
1, 2, 3, 5, 7, 8, 20, 38, 40, 41 - SM-A315F
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 28, 38, 40, 41, 66 - SM-A315G |
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 - USA |
| Speed |
| Speed |
HSPA 42.2/5.76 Mbps, LTE-A |
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
|
| Body |
| Dimensions |
| Dimensions |
159.3 x 73.1 x 8.6 mm (6.27 x 2.88 x 0.34 in) |
167.8 x 76.7 x 8.1 mm (6.61 x 3.02 x 0.32 in) |
| Weight |
| Weight |
185 g (6.53 oz) |
193 g (6.81 oz) |
| Build |
| Build |
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
Glass front, plastic back, plastic frame |
| SIM |
| SIM |
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by) |
| Colors |
| Colors |
Prism Crush Black, Prism Crush Blue, Prism Crush Red, Prism Crush White |
Black
|
| Display |
| Type |
| Type |
Super AMOLED capacitive touchscreen, 16M colors |
IPS LCD capacitive touchscreen, 16M colors |
| Size |
| Size |
6.4 inches, 98.9 cm2 (~84.9% screen-to-body ratio) |
6.5 inches, 102.0 cm2 (~79.3% screen-to-body ratio) |
| Resolution |
| Resolution |
1080 x 2400 pixels, 20:9 ratio (~411 ppi density) |
720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| Platform |
| OS |
| OS |
Android 10, One UI 2.0 |
Android 10, One UI 2.0 |
| Chipset |
| Chipset |
Mediatek MT6768 Helio P65 (12nm) |
Octa-core (4x2.3 GHz & 4x1.8 GHz) |
| CPU |
| CPU |
Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55) |
Octa core (2 x 1.8 GHz Cortex A73 + 6x 1.6 GHz Cortex A53) |
| GPU |
| GPU |
Mali-G52 MC2 |
microSDXC (dedicated slot) |
| Memory |
| RAM |
| RAM |
4GB/6GB |
3GB |
| Storage |
| Storage |
128GB Built-in |
32GB Built-in,
eMMC 5.1 |
| Card Slot |
| Card Slot |
microSDXC (dedicated slot) |
microSDXC (dedicated slot) |
| Main Camera |
| Quad |
| Quad |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF
|
16 MP, f/1.8, (wide), 1/3.06", 1.0µm, PDAF |
|
|
8 MP, f/2.2, 123˚, (ultrawide), 1/4.0", 1.12µm
|
8 MP, f/2.2, (ultrawide), 1/4.0", 1.12µm |
|
|
5 MP, f/2.4, (macro)
|
2 MP, f/2.4, (macro)
|
|
|
5 MP, f/2.4, (depth) |
2 MP, f/2.4, (depth) |
| Features |
| Features |
LED flash, panorama, HDR, Auto Focus, Digital Zoom up to 8x, F2.2 |
LED flash, panorama, HDR |
| Video |
| Video |
1080p@30fps |
1080p@30fps |
| Selfie Camera |
| Single |
| Single |
20 MP, f/2.2, (wide) |
13 MP, f/2.0, (wide) |
| Video |
| Video |
1080p@30fps |
1080p@30fps |
| Battery |
| Capacity |
| Capacity |
(Li-Po Non removable), 5000 mAh - |
Li-Po 4000 mAh, non-removable |
| Charging |
| Charging |
Fast battery charging 15W |
Fast charging 15W |
| Smartphone Features |
| Sensors |
| Sensors |
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
|
| Sound |
| Loudspeaker |
| Loudspeaker |
Yes
|
Yes |
| 3.5mm jack |
| 3.5mm jack |
Yes
|
Yes |
| Connectivity |
| WLAN |
| WLAN |
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
|
| Bluetooth |
| Bluetooth |
5.0, A2DP, LE
|
5.0, A2DP, LE
|
| GPS |
| GPS |
Yes, with A-GPS, GLONASS, GALILEO, BDS
|
Yes, with A-GPS, GLONASS, BDS
|
| NFC |
| NFC |
Yes (market/region dependent)
|
Yes (market/region dependent)
|
| Radio |
| Radio |
FM radio, RDS, recording
|
Unspecified |
| USB |
| USB |
2.0, Type-C 1.0 reversible connector, USB On-The-Go
|
2.0, Type-C 1.0 reversible connector
|
| Performance |
| Display |
| Display |
Performance AnTuTu: 151815 (v8)
GeekBench: 5096 (v4.4), 1216 (v5.1)
GFXBench: 7fps (ES 3.1 onscreen)
Display Contrast ratio: Infinite (nominal) |
|
| Loudspeaker |
| Loudspeaker |
-30.9 LUFS (Below average) |
|
| Battery life |
| Battery life |
Endurance rating 124h |
|
