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Brief information about compared phones: Celkon A87 , OnePlus 7TCelkon 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 7T 2019 year of release. cpu Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485). screen 6.55". with resolution 1080x2400. Smartphone has 16 megapixel front camera and 48 megapixel main camera . |
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| Display | Technology | Fluid AMOLED | ||
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4" inch | 6.55" inch | ||
| Screen area | 45.5 cm2 | 103.6 cm2 | ||
| Screen format | 5:3 (height:width) | 20:9 (height:width) | ||
| Screen to body ratio | % | 86.5% | ||
| Screen resolution | 480 x 800 px | 1080 x 2400 px | ||
| PPI /points per inch/ | 233 PPI | 402 PPI | ||
| Screen protection | Corning Gorilla Glass | |||
| Camera and Video | Rear camera, main | 5 MP, Single | 48 MP, Triple | |
| Camera specs | 5 MP, AF | 48 MP, f/1.6, 26mm (wide), 1/2'', 0.8µm, PDAF, OIS -12 MP, f/2.2, 51mm (telephoto), 1.0µm, 2x optical zoom -16 MP, 17mm (ultrawide), AF | ||
| Functions | Auto-HDR | |||
| Video | Yes | 1080p@30fps, gyro-EIS | ||
| Front camera, selfie | 0.3 MP, Single | 16 MP, Single | ||
| Specifications | VGA | 16 MP, f/2.0, 25mm (wide), 1/3.1'', 1.0µm | ||
| Performance | Operating system OS | Android 2.3.6 (Gingerbread) | Android 10.0 | |
| Chipset | Spreadtrum 6820 | Qualcomm SDM855 Snapdragon 855+ (7 nm) | ||
| Processor CPU | 1.0 GHz | Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) | ||
| Graphics processor GPU | Adreno 640 (700 MHz) | |||
| External memory | microSD, up to 32 GB (dedicated slot) | No | ||
| Internal memory | 512 MB, 512 MB RAM | 128GB 8GB RAM, 256GB 8GB RAM, UFS3.0 | ||
| Antutu 7 score | 401214 | |||
| Antutu 8 score | 494705 | |||
| GeekBench 5 Single Core | 761 | |||
| GeekBench 5 Multi-Core | 2697 | |||
| General specs | Release date | 2013, January | 2019, September 26 | |
| Dimensions (HxWxD) | Х Х mm | 160.9 Х 74.4 Х 8.1 mm | ||
| Weight | 0 g | 190 g | ||
| Colors | Black, White | Frosted Silver, Glacier blue | ||
| Battery | 1450 mAh, Li-Ion | 3800 mAh, Non-removable Li-Po | ||
| Approximate price | 70 EUR | 600 EUR | ||
| Battery life | Stand by time- Up to 220 h Talking time- Up to 3 h | |||
| Body build | Front glass (Gorilla Glass), back glass (Gorilla Glass), aluminum frame | |||
| 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 / 1900 & TD-SCDMA -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), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 32(1500), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500), 66(1700/2100) - EU LTE band 1(2100), 30(2300), 46, 48, 66(1700/2100), 71(600) - NA LTE band 1(2100), 41(2500) - CN, IN | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat18 1200/150 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, Wi-Fi Direct, DLNA, hotspot | ||
| GPS | No | Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO, SBAS | ||
| NFC | Yes | |||
| USB | Proprietary | 3.1, Type-C 1.0 reversible connector, USB On-The-Go | ||
| Bluetooth | Yes | 5.0, A2DP, LE, aptX HD | ||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | No | ||
| Others | DCI-P3 100% -HDR10+ -90Hz | |||
| Other features | Dop | Sensors Accelerometer | Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass - Fast battery charging 30W (Warp Charge 30T) | |
