Phone Comparison - Samsung Galaxy A21 vs Xiaomi Redmi Note 12 Pro vs Samsung Galaxy A55
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| Manufacturer | Samsung | Xiaomi | Samsung |
| Announced | 2020, April 8 | October 2022 | March 2024 |
| Status | Coming soon. Exp. release 2020, April | Coming Soon - November 2022 | Coming Soon - March 2024 |
| Colors | Various | Black, Blue, White, Violet | Iceblue, Lilac, Navy, Lemon |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
162.9 x 76 x 7.9 mm (6.41 x 2.99 x 0.31 in) |
161.1 x 77.4 x 8.2 mm (6.34 x 3.05 x 0.32 in) |
| Weight | - | 187 g (6.6 oz) | 213 g (7.51 oz) |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM, eSIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE | 1, 3, 5, 8, 19, 34, 38, 39, 40, 41 | LTE |
| 5G Network | - | 1, 3, 5, 8, 28, 38, 41, 77, 78 SA/NSA | SA/NSA/Sub6 - International SA/NSA/Sub6/mmWave - USA |
| SAR EU |
- W/kg (head) - W/kg (body) |
- W/kg (head) - W/kg (body) |
0.68 W/kg (head) 1.04 W/kg (body) |
| Messaging | |||
| Build Features | - Fingerprint Sensor Glass front, plastic back, plastic frame |
- Fingerprint Sensor (under display, optical) IP53, dust and splash resistant |
- Fingerprint Sensor (under display, optical) IP67 dust/water resistant (up to 1m for 30 min) |
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| OS | Android 10.0 | Android 12 | Android 14 |
| User Interface | One UI 2.0 | MIUI 13 | One UI 6.1 |
| Processor | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) | Octa-core (2x2.6 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55), MediaTek Dimensity 1080 (6 nm) | Octa-core (4x2.7 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55), Exynos 1480 |
| GPU | PowerVR GE8320 | Mali-G68 MC4 | - |
| RAM | 3 GB | 12 GB | 12 GB |
| Internal Memory | 64 GB | 256 GB | 256 GB |
| External Memory | microSDXC (dedicated slot) | No | microSDXC (uses shared SIM slot) |
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| Type | HD+ Super AMOLED Capacitive Touchscreen | FHD+ OLED Screen 120Hz Refresh Rate Dolby Vision, HDR10+ 500 nits (typ), 900 nits (HBM) |
FHD+ Super AMOLED Screen 120Hz Refresh Rate HDR10+, 550 Nits Corning Gorilla Glass Victus |
| Colors | 16M colors | 1B Colors | 16M colors |
| Size | 6.5 inches | 6.67 inches | 6.6 inches |
| Resolution | 720 x 1600 pixels (270 ppi) | 1080 x 2400 pixels (395 ppi) | 1080 x 2340 pixels (390 ppi) |
| Screen-to-Body Ratio | - | 86.57% | 85.97% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Unspecified | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 16 MP + 8 MP + 2 MP + 2 MP | 50 MP + 8 MP + 2 MP | 50 MP + 12 MP + 5 MP |
| Flash | No | Dual-LED Dual-tone Flash | LED Flash |
| Features | 16 MP, f/1.9, 28mm (wide), AF 8 MP, f/2.2, 12mm (ultrawide) 2 MP, (macro) 2 MP, (depth) panorama, HDR |
50 MP, f/1.9, 24mm (wide), 1/1.56", 1.0µm, PDAF, OIS 8 MP, f/1.9, 119˚ (ultrawide), 1/4", 1.12µm 2 MP, f/2.4, (macro) HDR, Panorama |
50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS 12 MP, f/2.2, 123˚ (ultrawide), 1/3.06", 1.12µm 5 MP, f/2.4, (macro) Panorama, HDR |
| Video | 1080p@30fps | 4K@30fps, 1080p@30/60/120fps, 720p@960fps | 4K@30fps, 1080p@30/60fps, gyro-EIS |
| Front Camera |
13 MP HDR 1080p@30fps [Similar] |
16 MP, (wide), 1/3.06", 1.0µm HDR 1080p@30/60fps [Similar] |
32 MP, f/2.2, 26mm (wide), 1/2.74", 0.8µm 4K@30fps, 1080p@30/60fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE-A (CA), 5G | HSPA, LTE-A, 5G |
| Bluetooth | 5.0, A2DP, LE | 5.2, A2DP, LE | 5.3, A2DP, LE, aptX |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| USB | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | USB Type-C 2.0, USB On-The-Go | USB Type-C 2.0, OTG |
| GPS | Yes, with A-GPS, GLONASS, BDS | GPS (L1), GLONASS (G1), BDS (B1I+B1c), GALILEO (E1), QZSS (L1) | GPS, GALILEO, GLONASS, BDS, QZSS |
| Browser | Yes | Yes | Yes |
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| Internal | 64 GB, 3 GB RAM eMMC 5.1 | 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 8 GB RAM or 128 GB, 6 GB RAM UFS 3.1 | 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS |
| Expandable Storage | microSDXC (dedicated slot) | No | microSDXC (uses shared SIM slot) |
| USB OTG | Supported | Supported | Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Magnetic-Field Sensor (Compass) | |
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| Gyroscope Sensor | |
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| Barometer Sensor | |
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| NFC | |
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| Type | Non-removable Li-Po Battery Fast battery charging 15W |
Non-removable Li-Po Battery Fast battery Charging 67W, 50% in 15 min, 100% in 46 min (advertised) USB Power Delivery 3.0 |
Non-removable Li-Po Battery Fast battery Charging 25W |
| Capacity | 4000 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
