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Brief information about compared phones: Acer DX900 , Celkon A355Acer DX900 2009 year of release. cpu 533 MHz Samsung S3C 6410. screen 2.8". with resolution 480x640. Smartphone has 0 megapixel front camera and 3 megapixel main camera . Celkon A355 2015 year of release. cpu 1.0 GHz. screen 3.5". with resolution 320x480. Smartphone has 0 megapixel front camera and 2 megapixel main camera . |
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| Display | Technology | TFT | ||
| Touchscreen | resistive touchscreen | capacitive touchscreen | ||
| Display colors | 65K | |||
| Screen size | 2.8" inch | 3.5" inch | ||
| Screen area | 24.3 cm2 | 36.5 cm2 | ||
| Screen format | 4:3 (height:width) | 3:2 (height:width) | ||
| Screen to body ratio | 37.9% | 50.0% | ||
| Screen resolution | 480 x 640 px | 320 x 480 px | ||
| PPI /points per inch/ | 286 PPI | 165 PPI | ||
| Camera and Video | Rear camera, main | 3.15 MP, Single | 2 MP, Single | |
| Camera specs | 3.15 MP, AF | 2 MP | ||
| Functions | Dual-LED flash | Dual-LED flash | ||
| Video | Yes | Yes | ||
| Front camera, selfie | 0.3 MP, Single | 0.3 MP, Single | ||
| Specifications | VGA videocall camera | VGA | ||
| Performance | Operating system OS | Microsoft Windows Mobile 6.1 Professional | Android 4.4.2 (KitKat) | |
| Chipset | Spreadtrum 7715 | |||
| Processor CPU | 533 MHz Samsung S3C 6410 | 1.0 GHz | ||
| Graphics processor GPU | Mali-400 | |||
| External memory | microSD (dedicated slot) | microSD, up to 32 GB | ||
| Internal memory | 128 MB RAM, 256 MB ROM | 512 MB, 256 MB RAM | ||
| General specs | Release date | 2009, February | 2015, May | |
| Dimensions (HxWxD) | 106 Х 60.5 Х 17 mm | 115.3 Х 63.3 Х 10.2 mm | ||
| Weight | 147 g | 97.5 g | ||
| Colors | Black | Light Blue, Dart Blue, Red, Yellow, White | ||
| Battery | 1530 mAh, Removable Li-Po | 1200 mAh, Li-Ion | ||
| Approximate price | 90 EUR | |||
| Battery life | Stand by time- Up to 150 h Talking time- Up to10 h | |||
| Communication and Connectivity | SIM card | Dual SIM (Mini-SIM) | Dual SIM | |
| Network | Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 GSM 900 / 1800 / 1900 - SIM 2 | Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2 | ||
| Speed | HSPA 7.2/0.384 Mbps | HSPA | ||
| GPRS | Class 10 | Yes | ||
| Edge | Class 10 | Yes | ||
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n | ||
| GPS | Yes, SiRF Star III chipset | Yes | ||
| NFC | Super AMOLED | |||
| USB | miniUSB | microUSB | ||
| Bluetooth | microUSB 2.0, A2DP | 2.0 | ||
| Harmful irradiation | SAR EU - 0.49 W/kg (head) 0.84 W/kg (body) | |||
| Music and Audio | Radio | panorama | FM radio | |
| Headphone jack | panorama | Yes | ||
| Others | Handwriting recognition | |||
| Other features | Dop | Sensors Accelerometer Pocket Office -Voice memo -MP3 player Also known as Acer Tempo DX900, Acer Tempo X960 | Sensors Accelerometer | |
