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Brief information about compared phones: Celkon A87 , OnePlus 5TCelkon A87 2013 year of release. cpu 1.0 GHz. screen 4". with resolution 480x800. Smartphone has 0 megapixel front camera and 5 megapixel main camera . OnePlus 5T 2017 year of release. cpu Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo). screen 6.01". with resolution 1080x2160. Smartphone has 16 megapixel front camera and 16 megapixel main camera . |
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| Display | Technology | Optic AMOLED | ||
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4" inch | 6.01" inch | ||
| Screen area | 45.5 cm2 | 93.7 cm2 | ||
| Screen format | 5:3 (height:width) | 18:9 (height:width) | ||
| Screen to body ratio | % | 80.0% | ||
| Screen resolution | 480 x 800 px | 1080 x 2160 px | ||
| PPI /points per inch/ | 233 PPI | 401 PPI | ||
| Screen protection | Corning Gorilla Glass 5 | |||
| Camera and Video | Rear camera, main | 5 MP, Single | 16 MP, Dual | |
| Camera specs | 5 MP, AF | 16 MP, f/1.7, 27mm (wide), 1/2.8'', 1.12µm, PDAF -20 MP, 1.0µm, AF, PDAF | ||
| Functions | Auto-HDR | |||
| Video | Yes | 1080p (gyro-EIS) | ||
| Front camera, selfie | 0.3 MP, Single | 16 MP, Single | ||
| Specifications | VGA | 16 MP, f/2.0, 20mm, 1/3.1'', 1.0µm | ||
| Performance | Operating system OS | Android 2.3.6 (Gingerbread) | Android 7.1.1 (Nougat), upgradable to Android 9.0 (Pie); OxygenOS 5.1.4 | |
| Chipset | Spreadtrum 6820 | Qualcomm MSM8998 Snapdragon 835 (10 nm) | ||
| Processor CPU | 1.0 GHz | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | ||
| Graphics processor GPU | Adreno 540 | |||
| External memory | microSD, up to 32 GB (dedicated slot) | No | ||
| Internal memory | 512 MB, 512 MB RAM | 128 GB, 8 GB RAM 64 GB, 6 GB RAM | ||
| Antutu 7 score | 212387 | |||
| GeekBench 4 Single Core | 1941 | |||
| GeekBench 4 Multi-Core | 6612 | |||
| GeekBench 4 RenderScript | 7859 | |||
| Antutu 8 score | 263919 | |||
| GeekBench 4 Battery | 3936 | |||
| GeekBench 5 Single Core | 383 | |||
| GeekBench 5 Multi-Core | 1655 | |||
| General specs | Release date | 2013, January | 2017, November | |
| Dimensions (HxWxD) | Х Х mm | 156.1 Х 75 Х 7.3 mm | ||
| Weight | 0 g | 162 g | ||
| Colors | Black, White | Midnight Black, Lava Red, Sandstone White (128/8GB only) | ||
| Battery | 1450 mAh, Li-Ion | 3300 mAh, Non-removable Li-Po | ||
| Approximate price | 70 EUR | 500 EUR | ||
| Battery life | Stand by time- Up to 220 h Talking time- Up to 3 h | |||
| Body build | Front glass, aluminum frame, back | |||
| Communication and Connectivity | SIM card | Dual SIM (Mini-SIM) | Dual SIM (Nano-SIM, dual stand-by) | |
| Network | Show all network frequencies: | 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), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100) | ||
| Speed | HSPA, LTE-A (3CA) Cat12 600/150 Mbps | |||
| GPRS | Yes | Yes | ||
| Edge | Yes | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, DLNA, hotspot | ||
| GPS | No | Yes, with A-GPS, GLONASS, BDS, GALILEO | ||
| NFC | Yes | |||
| USB | Proprietary | 2.0, Type-C 1.0 reversible connector | ||
| Bluetooth | Yes | 5.0, A2DP, LE, aptX HD | ||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | Yes | ||
| Others | DCI-P3 | |||
| Other features | Dop | Sensors Accelerometer | Sensors Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass - Fast battery charging 5V 4A 20W (Dash Charge) | |
