Phone Comparison - Xiaomi Redmi K40 vs Oppo F21 Pro vs Xiaomi Civi 2
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| Manufacturer | Xiaomi | Oppo | Xiaomi |
| Announced | 2021, February 25 | April 2022 | September 2022 |
| Status | Coming soon. Exp. release 2021, March | Coming Soon - April 2022 | Available - September 2022 |
| Price | - | Rs. 22,999 ($0.00) [Similarly Priced] | - |
| Colors | Black, White, Aurora | Cosmic Black, Sunset Orange | Black, Blue, Violet, Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
163.7 x 76.4 x 7.8 mm (6.44 x 3.01 x 0.31 in) |
159.9 x 73.2 x 7.5 mm (6.3 x 2.88 x 0.3 in) |
159.2 x 72.7 x 7.2 mm (6.27 x 2.86 x 0.28 in) |
| Weight | 196 g (6.91 oz) | 175 g (6.17 oz) | 171.8 g (6.03.0.28 oz) |
| SIM Type | Dual SIM (Nano-SIM, dual stand-by) | 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 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1x |
| 3G Network | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42 | 1, 3, 5, 8, 38, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 34, 38, 39, 40, 41, 42 |
| 5G Network | 1, 3, 28, 38, 41, 77, 78 SA/NSA | - | 1, 3, 5, 8, 28, 38, 41, 77, 78 SA/NSA |
| Messaging | |||
| Build Features | - Fingerprint Sensor (side-mounted) |
- Fingerprint Sensor (under display, optical) IPX4 water resistant RGB ring light around the camera (notifications, charging progress) |
- Fingerprint Sensor (under display, optical) |
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| OS | Android 11 | Android 12 | Android 12 |
| User Interface | MIUI 12 | ColorOS 12.1 | MIUI 13 |
| Processor | Octa-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585), Qualcomm SM8250-AC Snapdragon 870 5G (7 nm) | Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver), Qualcomm SM6225 Snapdragon 680 4G (6 nm) | Octa-core 2.4 GHz, Qualcomm Snapdragon 7 Gen 1 (4 nm) |
| GPU | Adreno 650 | Adreno 610 | Adreno |
| RAM | 12 GB | 8 GB | 12 GB |
| Internal Memory | 256 GB | 128 GB | 256 GB |
| External Memory | No | microSDXC | No |
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| Type | FHD+ IPS LCD Screen 144Hz Refresh Rate HDR10 Corning Gorilla Glass |
FHD+ AMOLED Screen 90Hz Refresh Rate 430 nits (typ), 600 nits (HBM), 800 nits (peak) Corning Gorilla Glass 5 |
FHD+ AMOLED Screen 120Hz Refresh Rate Dolby Vision HDR10+ 1000 nits (peak) Corning Gorilla Glass 5 |
| Colors | 16M Colour | 16M colors | 1B Colors |
| Size | 6.67 inches | 6.43 inches | 6.55 inches |
| Resolution | 1080 x 2400 pixels (395 ppi) | 1080 x 2400 pixels (409 ppi) | 1080 x 2400 pixels (402 ppi) |
| Screen-to-Body Ratio | 85.70% | 85.41% | 89.41% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 8 MP + 5 MP | 64 MP + 2 MP + 2 MP | 50 MP + 20 MP + 2 MP |
| Flash | LED Flash | LED Flash | Dual-LED Dual-tone Flash |
| Features | 48 MP, f/1.8, 26mm (wide), 1/2", 0.8µm, PDAF 8 MP, 119˚ (ultrawide) 5 MP, 50mm (macro), 1/5.0", 1.12µm HDR, panorama |
64 MP, f/1.7, 26mm (wide), 1/2.0", 0.7µm, PDAF 2 MP, f/3.3, (microscope) 2 MP, f/2.4, (depth) HDR, Panorama |
50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF 20 MP, f/2.2, 115˚ (ultrawide), 1/2.78", 1.0µm 2 MP, f/2.4, (macro) HDR, Panorama |
| Video | 4K@30fps, 1080p@30/60/120fps; gyro-EIS | 1080p@30fps, gyro-EIS | 4K@30fps, 1080p@30/60/120fps, 720p@960fps; gyro-EIS |
| Front Camera |
20 MP, f/2.0, (wide), 1/3", 0.9µm HDR 1080p@30fps, 720p@120fps [Similar] |
32 MP, f/2.4, 24mm (wide), 1/2.74", 0.8µm Panorama, HDR 1080p@30fps, gyro-EIS [Similar] |
32 MP, f/2.0, (wide), 1/2.8", 0.8µm, AF 32 MP, 100˚ (ultrawide), 1/2.8", 0.8µm 2 Dual-LED dual-tone flash HDR, panorama 1080p@30/60fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE-A, 5G | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A, 5G |
| Bluetooth | 5.1, A2DP, LE, aptX HD | 5.1, A2DP, LE, aptX HD | 5.2, 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/6, dual-band, Wi-Fi Direct, hotspot |
| USB | USB Type-C 2.0, USB On-The-Go | USB Type-C 2.0, USB On-The-Go | USB Type-C 2.0, USB On-The-Go |
| GPS | Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS | Yes, with A-GPS, GLONASS, BDS, GALILEO, QZSS | Yes, with A-GPS. Up to dual-band: GLONASS (1), BDS (2), GALILEO (1), QZSS (1) |
| Browser | Yes | Yes | Yes |
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| Internal | 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1 | 128 GB, 8 GB RAM UFS 2.2 | 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 2.2 |
| Expandable Storage | No | microSDXC | No |
| 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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| NFC | |
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| Type | Non-removable Li-Po Battery Fast battery charging 33W, 100% in 52 min (advertised) Power Delivery 3.0 Quick Charge 3+ |
Non-removable Li-Po Battery Fast battery charging 33W, 100% in 60 min (advertised) Reverse charging |
Non-removable Li-Po Battery Fast battery Charging 67W, 100% in 40 min (advertised) |
| Capacity | 4520 mAh | 4500 mAh | 4500 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
