Phone Comparison - Oppo A7x vs vivo U20 vs Xiaomi Redmi K30
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| Manufacturer | Oppo | vivo | Xiaomi |
| Announced | September 2018 | November 2019 | December 2019 |
| Status | Coming Soon - September 2018 | Coming Soon - November 2019 | Coming Soon - December 2019 |
| Price | - | Rs. 10,990 ($0.00) [Similarly Priced] | - |
| Colors | Starry Purple, Ice Flame Blue | Black, Blue, Green | Deep sea gleam, Purple Jade Fantasy, Huaying Jinghong |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
156.7 x 74 x 8 mm (6.17 x 2.91 x 0.31 in) |
162.2 x 76.5 x 8.9 mm (6.39 x 3.01 x 0.35 in) |
165.3 x 76.6 x 8.8 mm (6.51 x 3.02 x 0.35 in) |
| Weight | 169 g (5.96 oz) | 193 g (6.81 oz) | 208 g (7.34 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 CDMA 800 & TD-SCDMA - China |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1xEV-DO |
| 3G Network | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | 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), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) |
| Messaging | SMS, MMS, Push Mail, EMail, IM | ||
| Build Features | - Fingerprint Sensor | - Fingerprint Sensor |
- Fingerprint Sensor(side-mounted) |
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| OS | Android 8.1 (Oreo) | Android 9.0 (Pie) | Android 10.0 |
| User Interface | - | Funtouch 9.0 | MIUI 11 |
| Processor | Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53), Mediatek MT6771 Helio P60 | Octa-core (2x2.0 GHz Kryo 460 Gold & 6x1.7 GHz Kryo 460 Silver), Qualcomm SDM675 Snapdragon 675 (11 nm) | Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver), Qualcomm SDM730 Snapdragon 730G (8 nm) |
| GPU | Mali-G72 MP3 | Adreno 612 | Adreno 618 |
| RAM | 4 GB | 6 GB | 8 GB |
| Internal Memory | 128 GB | 64 GB | 256 GB |
| External Memory | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB | microSD, up to 256 GB (uses shared SIM slot) |
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| Type | LTPS IPS LCD Capacitive Touchscreen, To Be Confirmed | IPS LCD Capacitive Touchscreen | IPS LCD Capacitive Touchscreen Corning Gorilla Glass 5 HDR10 120Hz |
| Colors | 16M colors | 16M colors | 16M colors |
| Size | 6.3 inches | 6.53 inches | 6.67 inches |
| Resolution | 1080 x 2340 pixels (409 ppi) | 1080 x 2340 pixels (395 ppi) | 1080 x 2400 pixels (395 ppi) |
| Screen-to-Body Ratio | 84.05% | 84.22% | 84.65% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | FM radio | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | Dual 16 MP + 2 MP | 16 MP + 8 MP + 2 MP | 64 MP + 8 MP + 2 MP + 2 MP |
| Flash | LED flash | LED Flash | Dual-LED flash |
| Features | HDR, PDAF, Panorama | 16 MP, f/1.8, (wide), PDAF 8 MP, f/2.2, 13mm (ultrawide) 2 MP, f/2.4, macro camera HDR, Panorama |
64 MP, Sony IMX686 sensor, f/1.8, 26mm (wide), 1/1.7", 0.8µm, PDAF 8 MP, f/2.2, 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 |
| Video | 1080p@30fps | 1080p@30fps | 2160p@30fps, 1080p@30/120fps, 720p@960fps |
| Front Camera | 16 MP, f/2.0, HDR, 1080@30fps [Similar] | 16 MP, f/2.0, HDR, 1080p@30fps [Similar] |
20 MP, f/2.2, 0.8µm 2 MP, f/2.4, 1/5", 1.75µm, depth sensor 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 (2CA) Cat13 600/100 Mbps | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE-A |
| Bluetooth | 4.2, A2DP, LE | 5.0, A2DP, LE, aptX | 5.0, A2DP, LE, aptX HD |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, WiFi 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 | microUSB 2.0, USB On-The-Go | microUSB 2.0, USB On-The-Go | 2.0, Type-C 1.0 reversible connector, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS, GLONASS, GALILEO, BDS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 128 GB, 4 GB RAM | 64 GB, 6 GB RAM | 256 GB, 8 GB RAM or 128 GB, 8 GB RAM or 128 GB, 6 GB RAM or 64 GB, 6 GB RAM |
| Expandable Storage | microSD, up to 256 GB (dedicated slot) | microSD, up to 256 GB | microSD, up to 256 GB (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 | Non-removable Li-Po Battery Fast battery charging 18W |
Non-removable Li-Po Battery Fast battery charging 27W |
| Capacity | 3500 mAh | 5000 mAh | 4500 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
