Samsung Xcover 4 UK SIM-Free Smartphone - Dark Silver

Product Information

The display resolution shows the number of pixels on the horizontal and vertical side of the screen. The higher the resolution is, the greater the detail of the displayed content. Information about the number of pixels on the horizontal and vertical dimensions of the photos taken by the front camera, indicated in megapixels as well. Display The display of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc. Type/technology Battery The batteries of mobile devices differ in capacity and technology. They provide the electrical charge needed for the functioning of the devices. Capacity One of the main characteristics of the display is its type/technology, on which depends its performance.

Networks A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other. GSMEven if Samsung's Galaxy XCover 4 is not quite as resistant as it appears, it is protected better than many other very sensitive smartphones. The robust plastic casing does not look bulky and even the battery can be replaced. Water and dust protection have been increased compared with the predecessor, and the speaker now functions impeccably when the handset is wet. After using it in water, we found a drop of water under the rear cover. Thus, the device should be dried separately here.

Specific Absorption Rate (SAR) The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg. Head SAR (EU) As usual with Samsung, there are many aids for disabled users and diverse control options, such as turn to mute, emergency messages or display several apps simultaneously via a multi-window display. The aperture (f-stop number) indicates the size of the lens diaphragm opening, which controls the amount of light reaching the image sensor. The lower the f-stop number, the larger the diaphragm opening is, hence, the more light reaches the sensor. Usually, the f-stop number specified is the one that corresponds to the maximum possible diaphragm opening.The SAR body rating shows the maximum level of exposure to electromagnetic radiation when the device is positioned against the body at the hip. The highest SAR value of mobile devices allowed in the US is set to 1.6 W/kg per 1 g of tissue. It is specified by the FCC and the CTIA follows whether the mobile devices comply with this standard. The device's storage configuration could be more generous, but its extensive operating system and quite useful primary camera are convincing. The input options are diverse, the screen is appropriate, and the performance sufficient for daily routine. The battery life also fits well to the good overall impression. We did not like the handset's sound quality and gaming performance as much, though. Design Information about the dimensions and weight of the device, shown in different measurement units. Body materials, available colors, certifications. Width The Samsung Galaxy Xcover 4 is an Android smartphone produced by Samsung Electronics and released in April 2017. It is the successor to the Samsung Galaxy Xcover 3. The Xcover 4 is waterproof and dustproof designed around the IP68 specifications. RAM (Random-Access Memory) is used by the operating system and all installed applications. Data in the RAM is lost after the device is turned off or restarted.

Information about the process technology used in manufacturing the chip. The value in nanometers represents half the distance between elements that make up the CPU. Information about the number of pixels per centimeter (ppcm) or per inch (ppi) of the display. The higher the pixel density, the more detailed and clearer is the information displayed on the screen. Like its predecessor, the Galaxy XCover 4 is not suitable for extreme situations, but quite well-equipped for the uncertainties of everyday life. The hard shell conceals a solid, lower mid-range smartphone.The Samsung Galaxy Xcover 4 has models SM-G390F, SM-G390W, And SM-G390Y. This phone has been succeeded by the Xcover 4s.

The device is also MIL-STD-810G certified, which means that in theory it should easily withstand salty air, high or low temperatures or low pressure. However, according to Wikipedia, the test conditions for consumer devices are not controlled since it is a military standard. Samsung can thus specify its own test criteria – this should be kept in mind. According to the manufacturer, the smartphone had to pass the following tests to achieve the MIL-STD 810G certification: Information about the width, i.e. the horizontal side of the device when it is used in its standard orientation.

Verdict

CPU is the Central Processing Unit or the processor of a mobile device. Its main function is to interpret and execute instructions contained in software applications. Similar to the CPU, the GPU consists of processing units called cores. They handle the computation of graphics in various applications. The SAR head rating shows the highest level of exposure to electromagnetic radiation measured when the device is held next to the ear in a talk position. In Europe, the SAR limit for hand-held mobile devices is set to 2 W/kg per 10 g of tissue. This standard is specified by the CENELEC, complies with the IEC standards and follows the ICNIRP Guidelines 1998.