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Brief information about compared phones: Asus Zenfone 4 Pro ZS551KL , Xiaomi Mi 9 ExplorerAsus Zenfone 4 Pro ZS551KL 2017 year of release, cpu Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo), screen 5.5", with resolution 1080x1920. Smartphone has 8 megapixel front camera and 12 megapixel main camera. Xiaomi Mi 9 Explorer 2019 year of release, cpu Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485), screen 6.39", with resolution 1080x2340. Smartphone has 20 megapixel front camera and 48 megapixel main camera. |
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| Display | Technology | AMOLED | Super AMOLED | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | 16M | ||
| Screen size | 5.5" inch | 6.39" inch | ||
| Screen area | 83.4 cm2 | 100.2 cm2 | ||
| Screen format | 16:9 (height:width) | 19.5:9 (height:width) | ||
| Screen to body ratio | 70.3% | 85.2% | ||
| Screen resolution | 1080 x 1920 px | 1080 x 2340 px | ||
| PPI /points per inch/ | 401 PPI | 403 PPI | ||
| Screen protection | Corning Gorilla Glass 5 | Corning Gorilla Glass 6 | ||
| Camera and Video | Rear camera, main | 12 MP, Dual | 48 MP, Triple | |
| Camera specs | 12 MP, f/1.7, 25mm (wide), 1/2.55'', 1.4µm, 4-axis OIS, dual pixel PDAF & laser AF -16 MP, 50mm (telephoto), 1/3.1'', 1.0µm, 2x optical zoom, AF | 48 MP, f/1.5 (12GB RAM model) or f/1.8 (8GB RAM model), (wide), 1/2", 0.8µm, PDAF, Laser AF - 12 MP, f/2.2, 54mm (telephoto), 1/3.6", 1.0µm, laser AF, 2x optical zoom - 16 MP, 13mm (ultrawide), 1/3.0" | ||
| Functions | HDR | HDR | ||
| Video | 1080p@30fps | 1080p@30fps | ||
| Front camera, selfie | 8 MP, Single | 20 MP, Single | ||
| Specifications | 8 MP, f/1.9, 1/3.2'', 22mm (wide), 1.4µm, PDAF | 20 MP, f/2.0, 0.9μm | ||
| Performance | Operating system OS | Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4 | Android 9.0 (Pie); MIUI 10 | |
| Chipset | Qualcomm MSM8998 Snapdragon 835 (10 nm) | Qualcomm SDM855 Snapdragon 855 (7 nm) | ||
| Processor CPU | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | Octa-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.8 GHz Kryo 485) | ||
| Graphics processor GPU | Adreno 540 | Adreno 640 | ||
| External memory | microSD, up to 512 GB (uses SIM 2 slot) | No | ||
| Internal memory | 64/128 GB, 6 GB RAM | 256 GB, 8/12 GB RAM | ||
| General specs | Release date | 2017, August | 2019, February | |
| Dimensions (HxWxD) | 156.9 Х 75.6 Х 7.6 mm | 157.5 Х 74.7 Х 7.6 mm | ||
| Weight | 175 g | 173 g | ||
| Colors | Moonlight White, Pure Black | Transparent Black | ||
| Battery | 3600 mAh, Non-removable Li-Ion | 3300 mAh, Non-removable Li-Po | ||
| Approximate price | 390 EUR | 530 EUR | ||
| Battery life | Talking time- Up to 27 h 30 min (3G) | |||
| Body build | Front/back glass (Gorilla Glass 5) & aluminum frame | Back glass (Gorilla Glass 5), aluminum frame (7000 series) | ||
| Communication and Connectivity | SIM card | Hybrid Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 -4G - LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 19(800), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) - Global, Taiwan LTE band 1(2100), 12(700), 18(800), 26(850), 29(700), 30(2300), 41(2500) - US, Canada, Brazil LTE band 1(2100), 41(2500) - India | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 -4G - LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 20(800), 28(700), 38(2600), 39(1900), 40(2300) | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps | HSPA, LTE-A | ||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot | ||
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS | ||
| NFC | Yes | Yes | ||
| USB | Type-C 1.0 reversible connector | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | ||
| Bluetooth | 5.0, A2DP, EDR, LE, aptX | 5.0, A2DP, LE, aptX HD | ||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | No | ||
| Others | 24-bit/192kHz audio -DTS sound -Active noise cancellation with dedicated mic | HDR10 -DCI-P3 | ||
| Other features | Dop | Sensors Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum , Infrared port - Fast battery charging: 50% in 32 min | Sensors Fingerprint (under display), accelerometer, gyro, proximity, compass, Infrared port - Fast battery charging 27W (Quick Charge 4+) -Fast wireless charging 20W - Also known as Xiaomi Mi 9 Transparent Edition | |
