SAMSUNG GALAXY J4

Brand name of the company that manufactures the device.

Model name of the device.

Аlternative names, under which the mã sản phẩm is known.

Information about the width, i.e. The horizontal side of the device when it is used in its standard orientation.

Information about the height, i.e. The vertical side of the device when it is used in its standard orientation.

Information about the thickness/depth of the device in different measurement units.

Information about the weight of the device in different measurement units.

Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the khung of a rectangular parallelepiped.

Information about the colors, in which the device is available in the market.

Materials used in the fabrication of the device"s body.

Information about the type and form size (form factor) of the SIM thẻ used in the device.

Information about the number of SIM cards, supported by the device.

Information about some specific features related khổng lồ the SIM card(s) of the device.

GSM (Global System for thiết bị di động Communications) was developed to lớn replace the analog cellular network (1G), therefore it is referred to as a 2G di động network. It has been improved with the addition of General Packet Radio Services (GPRS) & later via the Enhanced Data rates for GSM Evolution (EDGE) technology.

UMTS stands for Universal mobile Telecommunications System. Based on the GSM standard, it is deemed as a 3G mobile network standard. It has been developed by the 3GPP & its major advantage is the provision of greater bandwidth & spectral efficiency, due khổng lồ the W-CDMA technology.

LTE is deemed lớn be the fourth generation (4G) of smartphone communications technology. It has been developed by the 3GPP based on the GSM/EDGE và UMTS/HSPA technologies in order to lớn increase the speed and capacity of wireless data networks. A further development of the công nghệ is called LTE Advanced.

There are several network technologies that enhance the performance of mobile networks mainly by increased data bandwidth. Information about the communication technologies supported by the device và their respective uplink & downlink bandwidth.

Information about the operating system used by the device as well as its version.

The SoC integrates different hardware components such as the CPU, GPU, memory, peripherals, interfaces, etc., as well as software for their functioning.

Information about the process công nghệ used in manufacturing the chip. The value in nanometers represents half the distance between elements that trang điểm the CPU.

CPU is the Central Processing Unit or the processor of a mobile device. Its main function is khổng lồ interpret and execute instructions contained in software applications.

The CPU bits are determined by the bit-size of the processor registers, address buses & data buses. 64-bit CPUs provide better performance than 32-bit ones, which on their part perform better than 16-bit processors.

The instruction phối architecture (ISA) is a set of commands used by the software to lớn manage the CPU"s work. Information about the set of instructions the processor can execute.

A CPU vi xử lý core is the processor unit, which executes software instructions. Presently, besides single-core processors, there are dual-core, quad-core, hexa-core and so on multi-core processors. They increase the performance of the device allowing the execution of multiple instructions in parallel.

The frequency of the processor describes its clock rate in cycles per second. It is measured in Megahertz (MHz) or Gigahertz (GHz).

GPU is a graphical processing unit, which handles computation for 2D/3D graphics applications. In di động devices GPU is usually utilized by games, UI, video playback, etc. GPU can also perform computation in applications traditionally handled by the CPU.

RAM (Random-Access Memory) is used by the operating system và all installed applications. Data in the RAM is lost after the device is turned off or restarted.

Information about the type of RAM used by the device.

Information about the capacity of the built-in storage of the device. Sometimes one và the same mã sản phẩm may is offered in variants with different internal storage capacity.

The various types of memory cards are characterized by different sizes & capacity. Information about the supported types of memory cards.

One of the main characteristics of the display is its type/technology, on which depends its performance.

In smartphone devices display kích cỡ is represented by the length of its diagonal measured in inches.

Approximate width of the display

Approximate height of the display

The ratio between the long and the short side of the display

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 per centimeter (ppcm) or per inch (ppi) of the display. The higher the pixel density, the more detailed và clearer is the information displayed on the screen.

The color depth of the display is also known as bit depth. It shows the number of bits used for the color components of one pixel. Information about the maximum number of colors the screen can display.

The estimated percentage of the screen area from the device"s front area.

Information about other functions & features of the display.

Sensors vary in type and purpose. They increase the overall functionality of the device, in which they are integrated.

Information about the sensor type of the camera. Some of the most widely used types of image sensors on sản phẩm điện thoại devices are CMOS, BSI, ISOCELL, etc.

The aperture (f-stop number) indicates the form 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 lớn the maximum possible diaphragm opening.

Focal length is the distance in millimeters from the focal point of the image sensor to lớn the optical center of the lens. The 35 mm equivalent indicates the focal length at which a full-frame camera will achieve an angle of view that"s the same as the one of the camera of the di động device. It is measured by multiplying the native focal length of the camera by the crop factor of the sensor. The crop factor itself can be determined as the ratio between the diagonal distances of the image sensor in the 35 mm camera and a given sensor.

The rear cameras of sản phẩm điện thoại devices use mainly a LED flash. It may arrive in a single, dual- or multi-light thiết đặt and in different arrangements.

One of the main characteristics of the cameras is their image resolution. It states the number of pixels on the horizontal và vertical dimensions of the image, which can also be shown in megapixels that indicate the approximate number of pixels in millions.

Information about the maximum resolution at which the rear camera can shoot videos.

Information about the maximum number of frames per second (fps) supported by the rear camera while recording video clip at the maximum resolution. Some of the main standard frame rates for recording và playing video are 24 fps, 25 fps, 30 fps, 60 fps.

Information about additional software and hardware features of the rear camera which improve its overall performance.

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 lớn the maximum possible diaphragm opening.

Focal length is the distance in millimeters from the focal point of the image sensor to the optical center of the lens. The 35 mm equivalent indicates the focal length at which a full-frame camera will achieve an angle of view that"s the same as the one of the camera of the smartphone device. It is measured by multiplying the native focal length of the camera by the crop factor of the sensor. The crop factor itself can be determined as the ratio between the diagonal distances of the image sensor in the 35 mm camera và a given sensor.

Sometimes, front cameras of điện thoại devices use auxiliary light. Whenever they do, it is most often a screen flash or front LED flash. Information about the type of auxiliary light.

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.

The loudspeaker is a device, which reproduces various sounds such as ring tones, alarms, music, voice calls, etc. Information about the type of speakers the device uses.

Information whether the device has an FM radio receiver or not.

The tracking/positioning service is provided by various satellite navigation systems, which track the autonomous geo-spatial positioning of the device that supports them. The most common satellite navigation systems are the GPS và the GLONASS. There are also non-satellite technologies for locating mobile devices such as the Enhanced Observed Time Difference, Enhanced 911, GSM Cell ID.

Wi-Fi communication between devices is realized via the IEEE 802.11 standards. Some devices have the possibility lớn serve as Wi-Fi Hotspots by providing mạng internet access for other nearby devices. Wi-Fi Direct (Wi-Fi P2P) is another useful standard that allows devices khổng lồ communicate with each other without the need for wireless access point (WAP).

The technology has several versions, which improve the connection speed, range, connectivity and discoverability of the devices. Information about the bluetooth không dây version of the device.

Bluetooth uses various profiles & protocols related to lớn faster exchange of data, energy saving, better device discoverability, etc. Some of those supported by the device are listed here.

There are several USB connector types: the Standard one, the Mini & Micro connectors, On-The-Go connectors, etc. Type of the USB connector used by the device.

There are several versions of the Universal Serial Bus (USB) standard: USB 1.0 (1996), the USB 2.0 (2000), the USB 3.0 (2008), etc. With each following version the rate of data transfer is increased.

Тhe USB interface in điện thoại devices may be used for different purposes such as battery charging, using the device as a mass storage, host, etc.

Information whether the device is equipped with a 3.5 mm audio jack.

Information about some of the most widely used connectivity technologies supported by the device.

Information about some of the features and standards supported by the browser of the device.

List of some of the most common audio file formats và codecs supported standardly by the device.

List of some of the most common clip file formats and codecs supported standardly by the device.

The capacity of a battery shows the maximum charge, which it can store, measured in mili-Ampere hours.

The battery type is determined by its structure và more specifically, by the chemicals used in it. There are different battery types & some of the most commonly used in mobile devices are the lithium-ion (Li-Ion) and the lithium-ion polymer battery (Li-Polymer).

2G talk time is the time period a battery charge will last, if one is constantly talking on the phone in a 2G cellular network.

3G talk time is the time period a battery charge will last, if one is constantly talking on the phone in a 3G cellular network.

Information about the electric current (amperes) & voltage (volts) the charger outputs. The higher power output đầu ra allows faster charging.

Information about some additional features of the device"s battery.

The SAR head rating shows the highest màn chơi of exposure lớn electromagnetic radiation measured when the device is held next to lớn the ear in a talk position. In Europe, the SAR limit for hand-held mobile devices is set lớn 2 W/kg per 10 g of tissue. This standard is specified by the CENELEC, complies with the IEC standards và follows the ICNIRP Guidelines 1998.

This SAR rating shows the highest level of exposure lớn electromagnetic radiation measured when the device is placed at the hip level. The top SAR value for di động devices used in Europe is limited to 2 W/kg per 10 g of tissue. This standard follows the ICNIRP Guidelines 1998 as well as the IEC standards và is determined by the CENELEC.

This SAR rating shows the maximum màn chơi of exposure lớn electromagnetic radiation taken when the device is placed next to the ear. The applicable limit for the US is 1.6 W/kg per 1 g of tissue. In the US the FCC tests and sets the SAR limits for all thiết bị di động devices, which are controlled by the CTIA.

• Bài viết xem nhiều

Card onboard và card rời

14/07/2021

2 players with a keyboard :: castle crashers general discussions

09/08/2021

Cách sửa lỗi unikey bị gõ thành dđ, aâ, eê, oô trên excel, chrome

27/04/2021

Những câu nói của yasuo

27/04/2021

Kiểm tra ngày kích hoạt xiaomi

24/04/2021

Morelocale 2 cài tiếng việt cho điện thoại android

26/04/2021

Lời mời kết bạn hay

24/04/2021

°5 rekomendasi anime brocon terbaik menurut mimin

07/05/2021

Nơi bán iphone lock nhật giá rẻ, uy tín, chất lượng nhất

10/08/2021

500ma bằng bao nhiêu a

03/05/2021

Mã qr cho wifi master key phiên bản ios

27/04/2021

Nâng cấp android 7.0 cho oppo f1s

02/05/2021

Supersu là gì

14/08/2021

32 inch bằng bao nhiêu cm

10/05/2021

Galaxy s6 edge plus mỹ

25/08/2021