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Brief information about compared phones: Nokia E51 , Oppo A31Nokia E51 2007 year of release. cpu 369 MHz ARM 11. screen 2". with resolution 240x320. Smartphone has 2 megapixel main camera . Oppo A31 2020 year of release. cpu Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53). screen 6.5". with resolution 720x1600. Smartphone has 8 megapixel front camera and 12 megapixel main camera . |
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| Display | Technology | TFT | IPS LCD | |
| Touchscreen | capacitive touchscreen | |||
| Display colors | 16M | 16M | ||
| Screen size | 2" inch | 6.5" inch | ||
| Screen area | 12.4 cm2 | 102.0 cm2 | ||
| Screen format | 4:3 (height:width) | 20:9 (height:width) | ||
| Screen to body ratio | 23.5% | 82.4% | ||
| Screen resolution | 240 x 320 px | 720 x 1600 px | ||
| PPI /points per inch/ | 200 PPI | 270 PPI | ||
| Camera and Video | Rear camera, main | 2 MP, Single | 12 MP, Triple | |
| Camera specs | 2 MP | 12 MP, f/1.8, (wide), PDAF -2 MP, f/2.4, 27mm (macro), 1/5.0'', 1.75µm -2 MP, (depth) | ||
| Functions | HDR | |||
| Video | 320p@15fps | 1080p@30fps | ||
| Front camera, selfie | 0 MP, | 8 MP, Single | ||
| Specifications | 8 MP, f/2.0 | |||
| Performance | Operating system OS | Symbian OS 9.2, Series 60 v3.1 UI | Android 9.0 (Pie); ColorOS 6.1 | |
| Chipset | Mediatek MT6765V/CB Helio P35 (12nm) | |||
| Processor CPU | 369 MHz ARM 11 | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) | ||
| Graphics processor GPU | PowerVR GE8320 | |||
| External memory | microSD, up to 16 GB (dedicated slot) | microSDXC (dedicated slot) | ||
| Internal memory | 130 MB, 96 MB RAM | 128GB 4GB RAM | ||
| Antutu 8 score | 105221 | |||
| General specs | Release date | 2007, September | 2020, February 13 | |
| Dimensions (HxWxD) | 114.8 Х 46 Х 12 mm | 163.9 Х 75.5 Х 8.3 mm | ||
| Weight | 100 g | 180 g | ||
| Colors | Black, Silver | Fantasy White, Mystery Black | ||
| Battery | 1050 mAh, Removable Li-Ion | 4230 mAh, Non-removable Li-Po | ||
| Approximate price | 120 EUR | 180 EUR | ||
| Battery life | Stand by time- Up to 310 h Talking time- Up to 4 h 20 min | |||
| Body build | Glass front, plastic back, plastic frame | |||
| Communication and Connectivity | SIM card | Mini-SIM | Dual SIM (Nano-SIM, dual stand-by) | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 2100 -4G - LTE (unspecified) | ||
| Speed | HSPA 3.6/0.384 Mbps | HSPA 42.2/5.76 Mbps, LTE-A | ||
| GPRS | Class 32 | Yes | ||
| Edge | Class 32 | Yes | ||
| Wi-Fi | Wi-Fi 802.11b/g, VoIP over WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | ||
| GPS | No | Yes, with A-GPS, BDS | ||
| NFC | ||||
| USB | miniUSB 2.0 | microUSB 2.0, USB On-The-Go | ||
| Bluetooth | 2.0, A2DP | 5.0, A2DP, LE | ||
| Harmful irradiation | SAR - 1.38 W/kg (head) 0.75 W/kg (body) SAR EU - 1.47 W/kg (head) | |||
| Music and Audio | Radio | FM radio | FM radio | |
| Headphone jack | No | Yes | ||
| Others | Five-way scroll key -Downloadable themes | 480 nits typ. brightness | ||
| Other features | Dop | , Infrared port - Push to talk -WMV/RV/MP4/3GP player -MP3/WMA/WAV/RA/AAC/M4A player -Document viewer (Word, Excel, PowerPoint, PDF) incl. MS Office 2007 support via free update -Predictive text input -Voice command/memo -Organizer | Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass | |
