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Brief information about compared phones: Celkon A64 , OnePlus 6TCelkon A64 2014 year of release. cpu Dual-core 1.2 GHz. screen 4". with resolution 320x480. Smartphone has 0 megapixel front camera and 2 megapixel main camera . OnePlus 6T 2018 year of release. cpu Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver). screen 6.41". with resolution 1080x2340. Smartphone has 16 megapixel front camera and 16 megapixel main camera . |
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| Display | Technology | TFT | Optic AMOLED | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4" inch | 6.41" inch | ||
| Screen area | 47.6 cm2 | 100.9 cm2 | ||
| Screen format | 3:2 (height:width) | 19.5:9 (height:width) | ||
| Screen to body ratio | 59.1% | 85.6% | ||
| Screen resolution | 320 x 480 px | 1080 x 2340 px | ||
| PPI /points per inch/ | 144 PPI | 402 PPI | ||
| Screen protection | Corning Gorilla Glass 6 | |||
| Camera and Video | Rear camera, main | 2 MP, Single | 16 MP, Dual | |
| Camera specs | 2 MP | 16 MP, f/1.7, 25mm (wide), 1/2.6'', 1.22µm, OIS, PDAF -20 MP (16 MP effective), 1/2.8'', 1.0µm, PDAF | ||
| Functions | LED flash | Auto-HDR, gyro-EIS | ||
| Video | Yes | 1080p@30fps | ||
| Front camera, selfie | 0.3 MP, Single | 16 MP, Single | ||
| Specifications | VGA | 16 MP, f/2.0, 25mm (wide), 1/3.1'', 1.0µm | ||
| DxOMark Main Score | 98 | |||
| DxOMark Photo | 101 | |||
| DxOMark Video | 91 | |||
| Performance | Operating system OS | Android 4.2.2 (Jelly Bean) | Android 9.0 (Pie); OxygenOS 9.0.5 | |
| Chipset | Qualcomm SDM845 Snapdragon 845 (10 nm) | |||
| Processor CPU | Dual-core 1.2 GHz | Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) | ||
| Graphics processor GPU | Adreno 630 | |||
| External memory | microSD, up to 32 GB | No | ||
| Internal memory | 512 MB, 256 MB RAM | 256 GB, 8 GB RAM, 128 GB, 6/8 GB RAM | ||
| Antutu 7 score | 293212 | |||
| GeekBench 4 Single Core | 2372 | |||
| GeekBench 4 Multi-Core | 8842 | |||
| GeekBench 4 RenderScript | 13163 | |||
| Antutu 8 score | 362575 | |||
| GeekBench 5 Single Core | 500 | |||
| GeekBench 5 Multi-Core | 2245 | |||
| General specs | Release date | 2014 | 2018, October | |
| Dimensions (HxWxD) | 124 Х 65 Х 10.5 mm | 157.5 Х 74.8 Х 8.2 mm | ||
| Weight | 125.6 g | 185 g | ||
| Colors | White, Black | Thunder Purple, Mirror Black, Midnight Black | ||
| Battery | 1400 mAh, Li-Ion | 3700 mAh, Non-removable Li-Po | ||
| Approximate price | 550 EUR | |||
| Battery life | Stand by time- Up to 150 h Talking time- Up to 8 h 20 min | |||
| Body build | Front/back glass, aluminum frame | |||
| Communication and Connectivity | SIM card | Dual 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), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), 32(1500), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500), 46, 66(1700/2100), 71(600) - Europe, North America LTE band 1(2100), 66(1700/2100) - India, China | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat16 1024/150 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 | Yes | Yes, with A-GPS, GLONASS, BDS, GALILEO | ||
| NFC | Yes | |||
| USB | microUSB | 2.0, Type-C 1.0 reversible connector, USB On-The-Go | ||
| Bluetooth | 2.0 | 5.0, A2DP, aptX HD, LE | ||
| Harmful irradiation | SAR EU - 0.42 W/kg (head) 0.55 W/kg (body) | |||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | No | ||
| Others | DCI-P3 | |||
| Other features | Dop | Sensors Accelerometer | Sensors Fingerprint (under display), accelerometer, gyro, proximity, compass - Fast battery charging 5V/4A 20W | |
