Phone Comparison - Xiaomi Mi A3 vs Realme X2 vs Samsung Galaxy M31
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| Manufacturer | Xiaomi | Realme | Samsung |
| Announced | July 2019 | Released 2019, September | 2020, February 25 |
| Status | Coming Soon - July 2019 | Coming Soon - December 17, 2019 | Available. Released 2020, March 5 |
| Price | Rs. 12,999 ($0.00) [Similarly Priced] | Rs. 16,999 ($0.00) [Similarly Priced] | Rs. 14,999 ($0.00) [Similarly Priced] |
| Colors | Black, Blue, White | Pearl White, Pearl Blue | Ocean Blue, Space Black, Red |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
153.5 x 71.9 x 8.5 mm (6.04 x 2.83 x 0.33 in) |
158.7 × 75.2 × 8.6 mm (6.25 × 2.96 × 0.34 in) |
159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) |
| Weight | 173.8 g (6.1.0.28 oz) | 182 g (6.42 oz) | 191 g (6.74 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 CDMA 800 & TD-SCDMA |
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 / 1900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 5(850), 8(900), 38(2600), 40(2300), 41(2500) | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500) |
| Messaging | |||
| Build Features | - Fingerprint Sensor (In-display) |
- Fingerprint Sensor(In-display) |
- Fingerprint Sensor |
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| OS | Android 9.0 (Pie) | Android 9.0 (Pie), planned upgrade to Android 10.0 | Android 10.0 |
| User Interface | Android One | ColorOS 6 | One UI 2.0 |
| Processor | Octa-core 2.0 GHz Kryo 260, Qualcomm SDM665 Snapdragon 665 (11 nm) | Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver), Qualcomm SDM730 Snapdragon 730G (8 nm) | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53), Exynos 9611 (10nm) |
| GPU | Adreno 610 | Adreno 618 | Mali-G72 MP3 |
| RAM | 6 GB | 8GB | 6 GB |
| Internal Memory | 128 GB | 128GB | 128 GB |
| External Memory | microSD, up to 256 GB (uses shared SIM slot) | microSD, up to 256 GB (dedicated slot) | microSD, up to 512 GB |
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| Type | Super AMOLED Capacitive Touchscreen Corning Gorilla Glass 5 |
Full HD+ Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass 5 | Full HD+ Infinity-U Super AMOLED Capacitive Touchscreen |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.08 inches | 6.4 inches | 6.4 inches |
| Resolution | 720 x 1560 pixels (283 ppi) | 1080 x 2340 pixels (403 ppi) | 1080 x 2340 pixels (403 ppi) |
| Screen-to-Body Ratio | 81.98% | - | 83.97% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | Yes |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 48 MP + 8 MP + 2 MP | 64 MP + 8 MP + 2 MP + 2 MP | 64 MP + 8 MP + 5 MP + 5 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 48 MP, f/1.8, (wide), 1/2", 0.8µm, PDAF 8 MP, (ultrawide), f/2.2, 1.12µm 2 MP, f/2.4, depth sensor HDR, Panorama |
64 MP, f/1.8, (wide), 1/1.7", 0.8µm, PDAF 8 MP, f/2.3, 13mm (ultrawide), 1/4", 1.12µm 2 MP, f/2.4, 1/5", 1.75µm (dedicated macro camera) 2 MP, f/2.4, 1/5", 1.75µm, depth sensor HDR, panorama |
64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.2, 25mm (macro), 1/5.0", 1.12µm 5 MP, f/2.2, (depth) HDR, Panorama |
| Video | 2160p@30fps, 1080p@30/60/120fps | 2160p@30fps, 1080p@30/60/120fps, 720p@960fps, gyro-EIS | 2160p@30fps, 1080p@30fps, gyro-EIS |
| Front Camera | 32 MP, f/2.0, 0.8µm, HDR, 1080p@30fps [Similar] |
32 MP, f/2.0, 0.8µm HDR, 1080p@30fps [Similar] |
32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | |
| Edge | Yes | Yes | |
| 3G | HSPA 42.2/5.76 Mbps, LTE-A (2CA) 450/50 Mbps | HSPA 42.2/11.5 Mbps, LTE-A | HSPA, LTE-A |
| Bluetooth | 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE | 5.0, 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 | 2.0, Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS | Yes, with A-GPS, GLONASS |
| Browser | Yes | Yes | |
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| Internal | 128 GB, 6 GB RAM or 64 GB, 4 GB RAM | 128GB, 8GB RAM or 128GB, 6GB RAM or 64GB, 4GB RAM (UFS2.1) | 128 GB, 6 GB RAM or 64 GB, 4 GB RAM |
| Expandable Storage | microSD, up to 256 GB (uses shared SIM slot) | microSD, up to 256 GB (dedicated slot) | microSD, up to 512 GB |
| USB OTG | Supported | Not Supported | Yes |
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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 30W: 67% in 30 min (VOOC Flash Charge 3.0) |
Non-removable Li-Po Battery Fast battery charging 15W |
| Capacity | 4030 mAh | 4000 mAh | 6000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 12,999 
Rs. 16,999 
