Phone Comparison - Oppo A31 vs Huawei P smart 2021 vs Samsung Galaxy A02s
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| Manufacturer | Oppo | Huawei | Samsung |
| Announced | February 2020 | September 2020 | 2020, November 24 |
| Status | Available - February 2020 | Available - September 2020 | Coming Soon - Februrary 2021 |
| Price | Rs. 11,490 ($0.00) [Similarly Priced] | - | - |
| Colors | Fantasy White, Mystery Black | Crush Green, Blush Gold, Midnight Black | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
163.9 x 75.5 x 8.3 mm (6.45 x 2.97 x 0.33 in) |
165.7 x 76.9 x 9.3 mm (6.52 x 3.03 x 0.37 in) |
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| Weight | 180 g (6.35 oz) | 206 g (7.27 oz) | - |
| SIM Type | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only) |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE (unspecified) | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 | LTE (unspecified) |
| Messaging | |||
| Build Features | - Fingerprint Sensor |
- Fingerprint Sensor (side-mounted) |
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| OS | Android 9.0 (Pie) | Android 10 | Android 10 |
| User Interface | ColorOS 6.1 | EMUI 10.1, no Google Play Servic | - |
| Processor | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765V/CB Helio P35 (12nm) | Octa-core (4x2.0 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Kirin 710A (14 nm) | Octa-core 1.8 GHz Cortex-A53, Qualcomm SM4250 Snapdragon 450 (11 nm) |
| GPU | PowerVR GE8320 | Mali-G51 MP4 | Adreno 506 |
| RAM | 4 GB | 4 GB | 3 GB |
| Internal Memory | 128 GB | 128 GB | 32 GB |
| External Memory | microSDXC (dedicated slot) | microSDXC | microSDXC |
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| Type | IPS LCD Capacitive Touchscreen | IPS LCD capacitive touchscreen | HD+ TFT Display |
| Colors | 16M colors | 16M Colour | 16M Colour |
| Size | 6.5 inches | 6.67 inches | 6.5 inches |
| Resolution | 720 x 1600 pixels (270 ppi) | 1080 x 2400 pixels (395 ppi) | 720 x 1520 pixels (259 ppi) |
| Screen-to-Body Ratio | 82.39% | 84.11% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | No | Unspecified |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 12 MP + 2 MP + 2 MP | 48 MP + 8 MP + 2 MP + 2 MP | 13 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 12 MP, f/1.8, (wide), PDAF 2 MP, f/2.4, 27mm (macro), 1/5.0", 1.75µm 2 MP, f/2.4, (depth) HDR, Panorama |
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, 120˚ (ultrawide) 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) HDR, panorama |
13 MP, (wide), AF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) |
| Video | 1080p@30fps | 4K@30fps, 1080p@30fps | 1080p@30fps |
| Front Camera | 8 MP, f/2.0, HDR, 1080p@30fps [Similar] |
8 MP, f/2.0 HDR 1080p@30fps [Similar] |
5 MP, f/2.2 [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Bluetooth | 5.0, A2DP, LE | 5.1, A2DP, LE | Yes |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Yes |
| USB | microUSB 2.0, USB On-The-Go | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | microUSB 2.0 |
| GPS | Yes, with A-GPS, BDS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 128 GB, 4 GB RAM | 128 GB, 4 GB RAM | 32 GB, 3 GB RAM |
| Expandable Storage | microSDXC (dedicated slot) | microSDXC | microSDXC |
| USB OTG | Supported | 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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| NFC | |
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| Type | Non-removable Li-Po Battery | Non-removable Li-Po Battery Fast battery charging 22.5W |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 4230 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
