Xiaomi Redmi Note 15 4G vs Samsung Galaxy A21s
General Info
| Manufacturer | |
| Xiaomi | Samsung |
| Announced | |
| December 2025 | Expected Announcement - May 2020 |
| Status | |
| Coming Soon - December 2025 | Rumored |
| Colors | |
| Black, Forest Green, Glacier Blue, Purple | Black, White, Blue |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
164 x 75.4 x 7.9 mm (6.46 x 2.97 x 0.31 in) |
8.9 mm thickness (0.35 in thickness) |
| Weight | |
| 183.7 g (6.46.0.25 oz) | 191 g (6.74 oz) |
| SIM Type | |
| Nano-SIM + Nano-SIM | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | |
| GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | |
| HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 |
| 4G Network | |
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 40, 41, 66 | LTE |
| Messaging | |
| Build Features | |
| - Fingerprint Sensor (under display, optical) IP64 dust tight and water resistant (water splashes) |
- Fingerprint Sensor |
Display
Hardware and OS
| OS | |
| Android 15 | Android 10.0 |
| User Interface | |
| HyperOS 2 | One UI 2.0 |
| Processor | |
| Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), Mediatek Helio G100 Ultra (6 nm) [Similar] | Octa-core 2.0 GHz, Exynos 850 [Similar] |
| GPU | |
| Mali-G57 MC2 [Similar] | - |
| RAM | |
| 8 GB [Browse Similar] | 3 GB [Browse Similar] |
| Internal Memory | |
| 512 GB | 64 GB |
| External Memory | |
| microSDXC (uses shared SIM slot) | microSDXC |
Camera
| Rear Camera | |
| 108 MP [Similar] | 48 MP + 8 MP + 2 MP [Similar] |
| Flash | |
| LED Flash | LED Flash |
| Features | |
| 108 MP, f/1.7, 24mm (wide), 1/1.67", 0.64µm, PDAF Auxiliary lens HDR, Panorama |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) Panorama, HDR |
| Video | |
| 1080p@30/60fps | 1080p@30fps |
| Front Camera | |
|
20 MP, f/2.2, (wide), 1/4.0", 0.7µm 1080p@30fps [Similar] |
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm HDR, Panorama 1080p@30fps [Similar] |
Multimedia
| 3.5mm Jack | |
| Radio | |
| No | - |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Yes | Yes |
| Edge | |
| Yes | Yes |
| 3G | |
| HSPA, LTE | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | |
| 5.3, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | |
| Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | |
| USB Type-C 2.0, OTG | Yes |
| GPS | |
| GPS, GALILEO, GLONASS, QZSS, BDS | Yes, with A-GPS |
| Browser | |
| Yes | Yes |
User Memory
| Internal | |
| 512 GB, 8 GB RAM or 256 GB, 8 GB RAM or 128GB 8 GB RAM or 128GB 6 GB RAM | 64 GB, 3 GB RAM or 32 GB, 3 GB RAM |
| Expandable Storage | |
| microSDXC (uses shared SIM slot) | microSDXC |
| USB OTG | |
| Supported | Supported |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| Magnetic-field Sensor (Compass) | |
| Gyroscope Sensor | |
| NFC | |
Battery
| Type | |
| Non-removable Li-ion Battery Fast Battery Charging 33W wired 18W reverse wired |
Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | |
| 6000 mAh | 5000 mAh |
| Stand by | |
| - | - |
| Talk Time | |
| - | - |