Phone Comparison - Xiaomi Redmi 9A vs vivo Y15s vs vivo Y21T
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| Manufacturer | Xiaomi | vivo | vivo |
| Announced | Not announced yet | November 2021 | 2022, January 3 |
| Status | Rumored | Available - November 2021 | Available. Released 2022, January 3 |
| Price | - | - | Rs. 16,490 ($0.00) [Similarly Priced] |
| Colors | Blue, other colors | Wave Green, Mystic Blue | Midnight Blue, Pearl White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension | - |
164 x 75.2 x 8.3 mm (6.46 x 2.96 x 0.33 in) |
164.3 x 76.1 x 8 mm (6.47 x 3 x 0.31 in) |
| Weight | - | 179 g (6.31 oz) | 182 g (6.42 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 |
| 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, 39, 40, 41 | LTE 1, 2, 3, 4, 5, 7, 8, 28, 34, 38, 39, 40, 41 |
| Messaging | |||
| Build Features | - Fingerprint Sensor |
- Fingerprint Sensor (side-mounted) ) |
- Fingerprint Sensor (side-mounted) ) |
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| OS | Android 10.0 | Android 11 (Go edition) | Android 11 |
| User Interface | MIUI 12 | Funtouch 11.1 | Funtouch 12 |
| Processor | , MediaTek Helio G25 | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765 Helio P35 (12nm) | Octa-core (4x2.4 GHz Kryo 265 Gold & 4x1.9 GHz Kryo 265 Silver), Qualcomm SM6225 Snapdragon 680 4G (6 nm) |
| GPU | Mali-G31 | PowerVR GE8320 | Adreno 610 |
| RAM | 3 GB | 3 GB | 4 GB |
| Internal Memory | 32 GB | 32 GB | 128 GB |
| External Memory | microSDXC (dedicated slot) | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
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| Type | IPS LCD Capacitive Touchscreen | HD+ IPS LCD Screen | FHD+ IPS LCD Screen 90Hz Refresh Rate |
| Colors | 16M colors | 16M Colors | 16M Colors |
| Size | 6.53 inches | 6.51 inches | 6.58 inches |
| Resolution | 720 x 1600 pixels (269 ppi) | 720 x 1600 pixels (270 ppi) | 1080 x 2408 pixels (401 ppi) |
| Screen-to-Body Ratio | - | 82.67% | 83.45% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | - | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP | 13 MP + 2 MP | 50 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 13 MP, f/1.8, (wide), 1/3.1", 1.12µm, PDAF HDR, Panorama |
13 MP, f/2.2, 27mm (wide), AF 2 MP, f/2.4, (depth) Panorama |
50 MP, f/1.8, 24mm (wide), PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera |
5 MP HDR 1080p@30fps [Similar] |
8 MP, f/2.0 1080p@30fps [Similar] |
8 MP, f/1.8, (wide) HDR 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 | HSPA 42.2/5.76 Mbps, LTE |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 b/g/n, 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 | microUSB 2.0, USB On-The-Go | USB Type-C 2.0, USB On-The-Go |
| GPS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 32 GB, 3 GB RAM | 32 GB, 3 GB RAM eMMC 5.1 | 128 GB, 4 GB RAM |
| Expandable Storage | microSDXC (dedicated slot) | microSDXC (dedicated 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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| NFC | |
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| Type | Non-removable Li-Po Battery | Non-removable Li-Po Battery Battery Charging 10W |
Non-removable Li-Po Battery Fast battery Charging 18W Reverse charging |
| Capacity | 5000 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
