Phone Comparison - Samsung Galaxy S21 5G vs Samsung Galaxy A03 vs Xiaomi Redmi 12C
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| Manufacturer | Samsung | Samsung | Xiaomi |
| Announced | 2021, January 14 | November 2021 | December 2022 |
| Status | Coming soon. Exp. release 2021, January 29 | Available - January 2022 | Available - January 2023 |
| Price | Rs. 69,999 ($799.99) [Similarly Priced] | Rs. 10,499 ($0.00) [Similarly Priced] | Rs. 8,999 ($0.00) [Similarly Priced] |
| Colors | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink | Black, Blue, Red | Black, Blue, Mint, Violet |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
151.7 x 71.2 x 7.9 mm (5.97 x 2.8 x 0.31 in) |
164.2 x 75.9 x 9.1 mm (6.46 x 2.99 x 0.36 in) |
168.8 x 76.4 x 8.8 mm (6.65 x 3.01 x 0.35 in) |
| Weight | 169 g (5.96 oz) | 196 g (6.91 oz) | 192 g (6.77 oz) |
| SIM Type | Single SIM (Nano-SIM and/or eSIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 | 1, 3, 5, 8, 34, 38, 39, 40, 41 |
| 5G Network | SA/NSA/Sub6/mmWave | - | - |
| SAR EU |
- W/kg (head) - W/kg (body) |
0.20 W/kg (head) 1.35 W/kg (body) |
- W/kg (head) - W/kg (body) |
| Messaging | |||
| Build Features | - Fingerprint Sensor (under display, ultrasonic) Samsung Pay (Visa, MasterCard certified) IP68 dust/water resistant (up to 1.5m for 30 mins) Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ |
- | - Fingerprint Sensor (rear-mounted) |
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| OS | Android 11 | Android 11 | Android 12 |
| User Interface | One UI 3.1 | - | MIUI 13 |
| Processor | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International / Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China/Korea, Exynos 2100 - International / Qualcomm Snapdragon 888 - USA/China/Korea | Octa-core (2x1.6 GHz & 6x1.6 GHz) | Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55), MediaTek MT6769Z Helio G85 (12nm) |
| GPU | Mali-G78 MP14 - International / Adreno 660 - USA/China/Korea | - | Mali-G52 MC2 |
| RAM | 8 GB | 4 GB | 6 GB |
| Internal Memory | 256 GB | 128 GB | 128 GB |
| External Memory | microSDXC (uses shared SIM slot) | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
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| Type | FHD+ Dynamic AMOLED 2X Display 120Hz Refresh Rate HDR10+ 1300 nits (peak) Corning Gorilla Glass Victus Always-on display |
HD+ PLS TFT | FHD+ IPS LCD Screen 500 nits (typ) |
| Colors | 16M Colour | 16M Colors | 16M Colors |
| Size | 6.2 inches | 6.5 inches | 6.71 inches |
| Resolution | 1080 x 2400 pixels (424 ppi) | 720 x 1600 pixels (270 ppi) | 720 x 1650 pixels (268 ppi) |
| Screen-to-Body Ratio | 86.12% | 81.80% | 82.75% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio (Snapdragon model only; market/operator dependent) | Unspecified | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP + 64 MP + 12 MP | 48 MP + 2 MP | 50 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, Dual Pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm (ultrawide), 1.4µm, Super Steady video Auto-HDR, Panorama |
48 MP, f/1.8, (wide), AF 2 MP, f/2.4, (depth) |
50 MP, (wide), PDAF 2 MP (depth) HDR |
| Video | 8K@24/30fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS | 1080p@30fps | 1080p@30fps |
| Front Camera | 10 MP, f/2.2, 26mm (wide), 1/3.2", 1.22µm, Dual Pixel PDAF, Dual video call, Auto-HDR, 4K@30/60fps, 1080p@30fps [Similar] | 5 MP, f/2.2 [Similar] |
5 MP, f/2.2, (wide) 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA, LTE |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | 5.1, A2DP, LE |
| Wi-Fi | 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, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| USB | USB Type-C 3.2, USB On-The-Go | microUSB 2.0 | microUSB 2.0 |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with A-GPS | GPS, GLONASS, GALILEO, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1 | 128 GB, 4 GB RAM or 64 GB, 4 GB RAM or 32 GB, 4 GB RAM or 32 GB, 3 GB RAM | 128 GB, 6 GB RAM or 128 GB, 4 GB RAM or 64 GB, 4 GB RAM eMMC 5.1 |
| Expandable Storage | microSDXC (uses shared SIM slot) | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
| USB OTG | Supported | Not Supported | Not 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 25W USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Power bank/Reverse wireless charging 4.5W |
Non-removable Li-Po Battery Battery Charging 10W |
Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | 4000 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
