Like Comment Share. Sensor model Information about the manufacturer and model of the image sensor used by this camera of the device. Pixel size - 1. The loudspeaker is a device, which reproduces various sounds such as ring tones, alarms, music, voice calls, etc. GSM Global System for Mobile Communications was developed to replace the analog cellular network 1G , therefore it is referred to as a 2G mobile network. Pixel density Information about the number of pixels per centimeter ppcm or per inch ppi of the display. List of some of the most common audio file formats and codecs supported standardly by the device.