| Product |
Xiaomi Redmi 4A
|
Samsung Galaxy A21
|
| Battery |
| Charging |
- |
15W wired |
| Type |
Li-Ion 3120 mAh, non-removable |
Li-Po 4000 mAh |
| Body |
| Build |
Glass front, plastic back, plastic frame |
Glass front, plastic back, plastic frame |
| Dimensions |
139.9 x 70.4 x 8.5 mm (5.51 x 2.77 x 0.33 in) |
167.8 x 76.7 x 8.1 mm (6.61 x 3.02 x 0.32 in) |
| SIM |
Nano-SIM + Micro-SIM |
Nano-SIMNano-SIM + Nano-SIM |
| Weight |
131.5 g (4.66 oz) |
193 g (6.81 oz) |
| Comms |
| Bluetooth |
4.1, A2DP, LE |
5.0, A2DP, LE |
| Infrared port |
Yes |
- |
| NFC |
No |
Yes (market/region dependent) |
| Positioning |
GPS, GLONASS, BDS |
GPS, GLONASS, BDS |
| Radio |
FM radio |
FM radio |
| USB |
microUSB 2.0 |
USB Type-C 2.0 |
| WLAN |
Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Display |
| Resolution |
720 x 1280 pixels, 16:9 ratio (~296 ppi density) |
720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| Size |
5.0 inches, 68.0 cm2 (~69.0% screen-to-body ratio) |
6.5 inches, 102.0 cm2 (~79.3% screen-to-body ratio) |
| Type |
IPS LCD |
IPS LCD |
| Features |
| Sensors |
Accelerometer, gyro, proximity |
Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass |
| Launch |
| Announced |
2016, November. Released 2016, November |
2020, April 08 |
| Status |
Discontinued |
Available. Released 2020, June 26 |
| Main Camera |
| Features |
LED flash, HDR, panorama |
LED flash, panorama, HDR |
| Quad |
- |
|
| Single |
13 MP, f/2.2, AF |
- |
| Video |
1080p@30fps |
1080p@30fps |
| Memory |
| Card slot |
microSDXC (uses shared SIM slot) |
microSDXC (dedicated slot) |
| Internal |
16GB 2GB RAM, 32GB 2GB RAM, 32GB 3GB RAM |
32GB 3GB RAM |
|
eMMC 5.1 |
eMMC 5.1 |
| Misc |
| Colors |
Gold, Rose Gold, Dark Gray |
Black |
| Models |
2016117 |
SM-A215U, SM-A215U1, SM-S215DL, SM-A215W |
| SAR |
|
|
| Network |
| 2G bands |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
GSM 850 / 900 / 1800 / 1900 |
| 3G bands |
HSDPA 850 / 900 / 1900 / 2100 |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - USA |
| 4G bands |
1, 3, 4, 5, 7, 20, 38, 40 |
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 25, 26, 28, 38, 39, 40, 41, 66, 71 - USA |
| Speed |
HSPA, LTE |
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Technology |
GSM / HSPA / LTE |
GSM / CDMA / HSPA / EVDO / LTE |
|
- |
CDMA2000 1xEV-DO |
| Our Tests |
| Camera |
Photo / Video |
- |
| Performance |
GeekBench: 1781 (v4.4) |
- |
| Platform |
| Chipset |
Qualcomm MSM8917 Snapdragon 425 (28 nm) |
Mediatek MT6765 Helio P35 (12 nm) |
| CPU |
Quad-core 1.4 GHz Cortex-A53 |
Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) |
| GPU |
Adreno 308 |
PowerVR GE8320 |
| OS |
Android 6.0.1 (Marshmallow), MIUI 10 |
Android 10, One UI 2.0 |
| Selfie camera |
| Single |
5 MP, f/2.2 |
|
| Video |
|
1080p@30fps |
| Sound |
| 3.5mm jack |
Yes |
Yes |
| Loudspeaker |
Yes |
Yes |
