Phone Comparison - Samsung Galaxy A51 vs Samsung Galaxy S21 5G vs Oppo Reno5 4G
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| Price Comparison (India) | - | - | |
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| Manufacturer | Samsung | Samsung | Oppo |
| Announced | December 2019 | 2021, January 14 | 2020, December 31 |
| Status | Coming Soon - December 12, 2019 | Coming soon. Exp. release 2021, January 29 | Coming soon. Exp. release 2021, January 09 |
| Price | Rs. 23,999 ($0.00) [Similarly Priced] | Rs. 69,999 ($799.99) [Similarly Priced] | - |
| Colors | Prism Crush White, Black, Pink, Blue | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink | Black, Silver |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
158.4 x 73.7 x 7.9 mm (6.24 x 2.9 x 0.31 in) |
151.7 x 71.2 x 7.9 mm (5.97 x 2.8 x 0.31 in) |
159.1 x 73.3 x 7.7 mm (6.26 x 2.89 x 0.3 in) |
| Weight | 172 g (6.07 oz) | 169 g (5.96 oz) | 171 g (6.03 oz) |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM and/or eSIM), Hybrid 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) | 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 |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE (unspecified) | LTE | 1, 3, 5, 7, 8, 38, 40, 41 |
| 5G Network | - | SA/NSA/Sub6/mmWave | - |
| Messaging | |||
| Build Features | - Fingerprint Sensor(In-display) |
- 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 (under display, optical) |
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| OS | Android 9.0 (Pie) | Android 11 | Android 11 |
| User Interface | One UI | One UI 3.1 | ColorOS 11.1 |
| Processor | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) | 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 (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver), Qualcomm SM7125 Snapdragon 720G (8 nm) |
| GPU | Mali-G72 MP3 | Mali-G78 MP14 - International / Adreno 660 - USA/China/Korea | Adreno 618 |
| RAM | 8 GB | 8 GB | 8 GB |
| Internal Memory | 128 GB | 256 GB | 128 GB |
| External Memory | microSD, up to 512 GB (dedicated slot) | microSDXC (uses shared SIM slot) | microSDXC (dedicated slot) |
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| Type | Full HD+ Infinity-O Super AMOLED Capacitive Touchscreen | FHD+ Dynamic AMOLED 2X Display 120Hz Refresh Rate HDR10+ 1300 nits (peak) Corning Gorilla Glass Victus Always-on display |
FHD+ AMOLED Screen 90Hz Refresh Rate 430 nits (typ), 600 nits (peak) Corning Gorilla Glass 3 |
| Colors | 16M colors | 16M Colour | 16M Colour |
| Size | 6.5 inches | 6.2 inches | 6.43 inches |
| Resolution | 1080 x 2340 pixels (396 ppi) | 1080 x 2400 pixels (424 ppi) | 1080 x 2400 pixels (409 ppi) |
| Screen-to-Body Ratio | 89.06% | 86.12% | 85.72% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio (Snapdragon model only; market/operator dependent) | Unspecified |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 12 MP + 5 MP + 5 MP | 12 MP + 64 MP + 12 MP | 64 MP + 8 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED flash |
| Features | 48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF 12 MP, f/2.2, 13mm (ultrawide) 5 MP, f/2.2, depth sensor 5 MP, f/2.4, macro camera Panorama, HDR |
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 |
64 MP, f/1.7, 26mm (wide), 1/1.73", 0.8µm, PDAF 8 MP, f/2.2, 119˚ (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) HDR, panorama |
| Video | 2160p@30fps, 1080p@30fps | 8K@24/30fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS | 4K@30fps, 1080p@30/60/120fps; gyro-EIS, HDR |
| Front Camera |
32 MP, f/2.0, 25mm (wide) HDR 1080p@30fps [Similar] |
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] |
44 MP, f/2.4, 24mm (wide) HDR 1080p@30fps, gyro-EIS [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | 5.1, A2DP, LE, aptX HD |
| Wi-Fi | 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 | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| USB | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | USB Type-C 3.2, USB On-The-Go | USB Type-C, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with A-GPS, GLONASS, GALILEO, QZSS, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 4 GB RAM | 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1 | 128 GB, 8 GB RAM |
| Expandable Storage | microSD, up to 512 GB (dedicated slot) | microSDXC (uses shared SIM slot) | microSDXC (dedicated 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 25W USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Power bank/Reverse wireless charging 4.5W |
Non-removable Li-Po Battery Fast battery charging 50W Reverse charging SuperVOOC |
| Capacity | 4000 mAh | 4000 mAh | 4310 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 25,250 
