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Brief information about compared phones: Celkon A66 , Sharp Aquos R2Celkon A66 2014 year of release. cpu Dual-core 1.2 GHz. screen 4.5". with resolution 480x854. Smartphone has 0 megapixel front camera and 3 megapixel main camera . Sharp Aquos R2 2018 year of release. cpu Octa-core (4x2.6 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver). screen 6". with resolution 1440x3040. Smartphone has 16 megapixel front camera and 22 megapixel main camera . |
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| Display | Technology | TFT | IGZO IPS LCD | |
| Touchscreen | capacitive touchscreen | capacitive touchscreen | ||
| Display colors | 16M | |||
| Screen size | 4.5" inch | 6" inch | ||
| Screen area | 55.8 cm2 | 89.9 cm2 | ||
| Screen format | 16:9 (height:width) | 19:9 (height:width) | ||
| Screen to body ratio | 61.1% | 77.8% | ||
| Screen resolution | 480 x 854 px | 1440 x 3040 px | ||
| PPI /points per inch/ | 218 PPI | 561 PPI | ||
| Camera and Video | Rear camera, main | 3.15 MP, Single | 22.6 MP, Dual | |
| Camera specs | 3.15 MP | 22.6 MP, PDAF -16.3 MP, PDAF (for video recording only) | ||
| Functions | LED flash | LED flash, HDR, panorama | ||
| Video | Yes | 2160p@30fps (dedicated video camera) | ||
| Front camera, selfie | 0.3 MP, Single | 16.3 MP, Single | ||
| Specifications | VGA | 16.3 MP | ||
| Performance | Operating system OS | Android 4.1.2 (Jelly Bean) | Android 8.0 (Oreo) | |
| Chipset | Qualcomm SDM845 Snapdragon 845 (10 nm) | |||
| Processor CPU | Dual-core 1.2 GHz | Octa-core (4x2.6 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) | ||
| Graphics processor GPU | Adreno 630 | |||
| External memory | microSD, up to 32 GB | microSD, up to 512 GB (uses SIM 2 slot) | ||
| Internal memory | 4 GB, 512 MB RAM | 64 GB, 512GB 4GB | ||
| Antutu 7 score | 265822 | |||
| General specs | Release date | 2014 | 2018, May | |
| Dimensions (HxWxD) | 136 Х 67.2 Х 11 mm | 156 Х 74 Х 9 mm | ||
| Weight | 98 g | 181 g | ||
| Colors | White, Black | Black, White | ||
| Battery | 2000 mAh, Li-Ion | 3130 mAh, Non-removable Li-Ion | ||
| Approximate price | 350 EUR | |||
| Battery life | Stand by time- Up to 160 h Talking time- Up to 5 h | |||
| Communication and Connectivity | SIM card | Dual SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | |
| Network | Show all network frequencies: | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 CDMA 800 & TD-SCDMA -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE | ||
| Speed | HSPA, LTE | |||
| 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, hotspot | ||
| GPS | Yes | Yes, with A-GPS, GLONASS | ||
| NFC | ||||
| USB | microUSB | 2.0, Type-C 1.0 reversible connector | ||
| Bluetooth | 2.0 | 5.0, A2DP, LE | ||
| Harmful irradiation | SAR EU - 0.38 W/kg (head) 0.47 W/kg (body) | |||
| Music and Audio | Radio | FM radio | No | |
| Headphone jack | Yes | Yes | ||
| Others | Active noise cancellation with dedicated mic -Dolby Vision & Dolby Atmos | |||
| Other features | Dop | Sensors Accelerometer, proximity | Sensors Fingerprint (front-mounted), accelerometer, gyro, proximity, compass - Fast battery charging - IPX5/IPX8/IP6X | |
