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Brief information about compared phones: BLU Studio X , O2 XDA StellarBLU Studio X 2015 year of release. cpu Quad-core 1.3 GHz Cortex-A7. screen 5". with resolution 720x1280. Smartphone has 2 megapixel front camera and 8 megapixel main camera . O2 XDA Stellar 2007 year of release. cpu 400 MHz ARM 11. screen 2.8". with resolution 240x320. Smartphone has 0 megapixel front camera and 3 megapixel main camera . |
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| Display | Technology | IPS LCD | TFT | |
| Touchscreen | capacitive touchscreen | resistive touchscreen | ||
| Display colors | 16M | 65K | ||
| Screen size | 5" inch | 2.8" inch | ||
| Screen area | 68.9 cm2 | 24.3 cm2 | ||
| Screen format | 16:9 (height:width) | 4:3 (height:width) | ||
| Screen to body ratio | 66.5% | 36.7% | ||
| Screen resolution | 720 x 1280 px | 240 x 320 px | ||
| PPI /points per inch/ | 294 PPI | 143 PPI | ||
| Camera and Video | Rear camera, main | 8 MP, Single | 3.15 MP, Single | |
| Camera specs | 8 MP, AF | 3.15 MP, AF | ||
| Functions | LED flash | |||
| Video | 1080p@30fps | Yes | ||
| Front camera, selfie | 2 MP, Single | 0.3 MP, Single | ||
| Specifications | 2 MP | VGA videocall camera | ||
| Performance | Operating system OS | Android 4.4.2 (KitKat), upgradable to 5.0 (Lollipop) | Microsoft Windows Mobile 6.0 Professional | |
| Chipset | Qualcomm MSM7200 | |||
| Processor CPU | Quad-core 1.3 GHz Cortex-A7 | 400 MHz ARM 11 | ||
| Graphics processor GPU | Mali-400 | Adreno 130 | ||
| External memory | microSD, up to 64 GB | microSD | ||
| Internal memory | 8 GB, 1 GB RAM | 128 MB RAM, 256 MB ROM | ||
| General specs | Release date | 2015, January | 2007, November | |
| Dimensions (HxWxD) | 144 Х 72 Х 10.5 mm | 112 Х 59 Х 18.6 mm | ||
| Weight | 154 g | 190 g | ||
| Colors | Black, White, Blue, Gold, Pink | Silver | ||
| Battery | 2100 mAh, Removable Li-Ion | 1350 mAh, Removable Li-Ion | ||
| Approximate price | 120 EUR | |||
| Battery life | Stand by time- Up to 750 h (2G) / Up to 700 h (3G) Talking time- Up to 25 h (2G) / Up to 12 h (3G) | Stand by time- Up to 365 h Talking time- Up to 5 h | ||
| Communication and Connectivity | SIM card | Dual SIM (Mini-SIM/ Micro-SIM, dual stand-by) | Mini-SIM | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 | ||
| Speed | HSPA 21.1/5.76 Mbps | HSPA 3.6/0.384 Mbps | ||
| GPRS | Yes | Class 10 | ||
| Edge | Yes | Class 10 | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11b/g | ||
| GPS | Yes, with A-GPS | Yes, with A-GPS | ||
| NFC | ||||
| USB | microUSB 2.0 | 2.0 | ||
| Bluetooth | 4.0, A2DP | 2.0 | ||
| Music and Audio | Radio | Stereo FM radio | No | |
| Headphone jack | Yes | No | ||
| Others | Handwriting recognition | |||
| Other features | Dop | Sensors Accelerometer, gyro, proximity | Pocket Office -Business card reader -Voice memo -Media Player 10 HTC Kaiser platform | |
