Phone Comparison - vivo Y51a vs Oppo A54 vs vivo V21 5G
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| Manufacturer | vivo | Oppo | vivo |
| Announced | January 2021 | March 2021 | April 2021 |
| Status | Coming Soon - January 2021 | Available - April 2021 | Coming Soon - May 2021 |
| Price | - | - | Rs. 29,990 ($0.00) [Similarly Priced] |
| Colors | Titanium Sapphire, Crystal Symphony | Crystal Black, Starry Blue | Arctic White, Dusk Blue, Sunset Dazzle |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
163.9 x 75.3 x 8.4 mm (6.45 x 2.96 x 0.33 in) |
163.6 x 75.7 x 8.4 mm (6.44 x 2.98 x 0.33 in) |
159.7 x 73.9 x 7.3 mm (6.29 x 2.91 x 0.29 in) |
| Weight | 188 g (6.63 oz) | 192 g (6.77 oz) | 176 g (6.21 oz) |
| SIM Type | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) | Hybrid 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 |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | 1, 3, 5, 8, 40 | 1, 3, 5, 8, 38, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 39, 40, 41 |
| 5G Network | - | - | SA/NSA |
| Messaging | |||
| Build Features | - Fingerprint Sensor (side-mounted) |
- Fingerprint Sensor (side-mounted) |
- Fingerprint Sensor (under display, optical) |
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| OS | Android 11 | Android 10 | Android 11 |
| User Interface | Funtouch 11 | ColorOS 7.2 | Funtouch 11.1 |
| Processor | Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver), Qualcomm SM6115 Snapdragon 662 (11 nm) | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), MediaTek MT6853 Dimensity 800U 5G (7 nm) |
| GPU | Adreno 610 | PowerVR GE8320 | Mali-G57 MC3 |
| RAM | 8 GB | 4 GB | 8 GB |
| Internal Memory | 128 GB | 128 GB | 128 GB |
| External Memory | microSDXC (dedicated slot) | microSDXC (dedicated slot) | microSDXC (uses shared SIM slot) |
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| Type | IPS LCD Screen | HD+ IPS LCD Screen | FHD+ AMOLED Screen 90Hz Refresh Rate HDR10+ 500 nits (typ) |
| Colors | 16M Colour | 16M colors | 16M Colour |
| Size | 6.58 inches | 6.51 inches | 6.44 inches |
| Resolution | 1080 x 2408 pixels (401 ppi) | 720 x 1600 pixels (270 ppi) | 1080 x 2400 pixels (409 ppi) |
| Screen-to-Body Ratio | 84.54% | 82.32% | 84.70% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 8 MP + 2 MP | 13 MP + 2 MP + 2 MP | 64 MP + 8 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 48 MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 120˚, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) HDR, Panorama |
13 MP, f/2.2, 25mm (wide), 1/3.06", 1.12µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) HDR, Panorama |
64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF, OIS 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) HDR, Panorama |
| Video | 4K@30fps, 1080p@30fps, gyro-EIS | 1080p@30fps | 4K@30fps (no OIS), 1080p@30/60fps |
| Front Camera |
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm HDR 1080p@30fps [Similar] |
16 MP, f/2.0, (wide), 1/3.06", 1.0µm HDR 1080p@30fps [Similar] |
44 MP, f/2.0, (wide), AF, OIS Dual-LED flash, HDR 4K@30fps (no OIS), 1080p@30fps [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-A |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE, aptX HD | 5.1, A2DP, LE |
| 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, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, 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 A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 128 GB, 8 GB RAM | 128 GB, 4 GB RAM or 64 GB, 4 GB RAM | 128 GB, 8 GB RAM UFS 2.2 |
| Expandable Storage | microSDXC (dedicated slot) | microSDXC (dedicated slot) | 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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| NFC | |
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| Type | Non-removable Li-Po Battery Fast battery charging 18W |
Non-removable Li-Po Battery Fast battery charging 18W |
Non-removable Li-Po Battery Fast battery charging 33W, 66% in 30 min (advertised) |
| Capacity | 5000 mAh | 5000 mAh | 4000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 13,990 
Rs. 10,990 
