iPad Air 2 What Year

Dimensions: 240 x 169.5 x 6.1 mm
Weight: 444 g
SoC: Apple A8X
CPU: Apple Cyclone ARMv8, 1500 MHz, Number of Cores: 3
GPU: PowerVR GXA6850, Number of Cores: 8
RAM: 2 GB
Built-in memory: 16 GB, 64 GB, 128 GB
Screen: 9.7 in, IPS, 2048 x 1536 pixels, 24 bits
Battery: 8600 mAh Li-polymer
Operating system: iOS 8.1
Camera: 3264 x 2448 pixels, 1920 x 1080 pixels, 30 frames / sec
SIM card: Nano-SIM
Wifi: a, b, g, n, n 5GHz, ac, Dual band, Wi-Fi Hotspot
USB: 2.0
Bluetooth: 4.0
Navigation: GPS, A-GPS, GLONASS

Make and model

Information about the brand, model and alternative names of a particular device, if any.

The name of the device manufacturer.

The name of the device model.

Other names by which the model is designated.

Design

Information about the size and weight of the device, presented in different units. Materials used, colors offered, certificates.

Width Information. Meaning the horizontal side of the device with its standard orientation during use.

Height information. I mean the vertical side of the device with its standard orientation during use.

Information about the thickness of the device in different units.

Information about the weight of the device in different units.

The approximate volume of the device, calculated on the basis of the dimensions provided by the manufacturer. Applies to devices with the shape of a rectangular parallelepiped.

Information about the colors in which this device is offered for sale.

The materials used to make the device case.

SIM card

A SIM card is used in mobile devices to store data confirming the authenticity of mobile service subscribers.

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

Information about the number of SIM cards that the device supports.

Mobile networks

Mobile network. It is a radio system that allows multiple mobile devices to exchange data with each other.

GSM (Global System for Mobile Communications) is designed to replace the analog mobile network (1G). For this reason, GSM is very often called a 2G mobile network. It is improved by the addition of GPRS (General Packet Radio Services), and later EDGE (Enhanced Data rates for GSM Evolution) technologies.

CDMA (Code-Division Multiple Access). This is a channel access method used in communications on mobile networks. Compared to other 2G and 2.5G standards like GSM and TDMA, it provides higher data transfer speeds and the ability to connect more consumers at the same time.

CDMA2000. This is a group of 3G standards for mobile networks based on CDMA. Their advantages include a more powerful signal, fewer network outages and interruptions, support for an analog signal, wide spectral coverage, etc.

UMTS. It is short for Universal Mobile Telecommunications System. It is based on the GSM standard and applies to 3G mobile networks. Developed by 3GPP and its biggest advantage is the provision of greater speed and spectral efficiency thanks to W-CDMA technology.

LTE (Long Term Evolution) is defined as fourth-generation (4G) technology. It was developed by 3GPP based on GSM / EDGE and UMTS / HSPA in order to increase the capacity and speed of wireless mobile networks. The subsequent development of technology is called LTE Advanced.

Mobile Technologies and Data Rate

Communication between devices in mobile networks is carried out through technologies that provide different data rates.

There are several technologies that improve mobile networks, mainly by increasing throughput. Information about the communication technologies that the device supports and the supported data rates.

iPad Air 2 What Year

Operating system

Operating system. It is a system software that controls and coordinates the operation of hardware components in a device.

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

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SoC (System on a Chip)

The system on a chip (SoC) includes in one chip all the most important hardware components of a mobile device.

A system on a chip (SoC) integrates various hardware components, such as a processor, graphics processor, memory, peripherals, interfaces, etc., as well as the software necessary for their functioning.

Information about the technological process by which the chip is made. The value in nanometers measures half the distance between the elements in the processor.

The main function of the processor (CPU) of a mobile device. It is the interpretation and execution of instructions contained in software applications.

The bit depth (bits) of the processor is determined by the size (in bits) of the registers, address buses, and data buses. 64-bit processors have higher performance compared to 32-bit ones, which, for their part, are more efficient than 16-bit processors.

Instructions. These are the commands by which the software sets / controls the processor. Information about the instruction set (ISA) that the processor can execute.

The cache is used by the processor to reduce access time to more frequently used data and instructions. L1 (level 1) cache memory is small and works much faster than both system memory and other levels of cache memory. If the processor does not find the requested data in L1, it continues to search for them in the L2 cache. With some processors, this search is performed simultaneously in L1 and L2.

L2 (level 2) cache is slower than L1, but instead it has a large capacity, allowing caching of more data. She, like L1, is much faster than system memory (RAM). If the processor does not find the requested data in L2, it continues to search for them in the L3 cache (if any) or in RAM memory.

L3 (level 3) cache is slower than L2, but instead it has a large capacity, which allows caching more data. It, like L2, is much faster than system memory (RAM).

The processor core executes program instructions. There are processors with one, two or more cores. Having more cores increases performance by allowing parallel execution of multiple instructions.

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The processor clock speed describes its speed in cycles per second. It is measured in megahertz (MHz) or gigahertz (GHz).

The graphics processor (GPU) handles calculations for various 2D / 3D graphics applications. In mobile devices, it is most often used by games, the consumer interface, video applications, etc.

Like a processor, a graphics processor consists of several working parts called cores. They handle the graphical calculations of different applications.

Random access memory (RAM) is used by the operating system and all installed applications. Data that is stored in RAM is lost after the device is turned off or restarted.

Information about the type of random access memory (RAM) used by the device.

Built-in memory

Each mobile device has a built-in (non-removable) memory with a fixed amount.

Information about the amount of internal memory of the device. Often this model is offered in different versions with different amounts of internal memory.

Screen

The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

One of the main characteristics of the screen. This is the technology by which it is made and on which the image quality of information directly depends.

On mobile devices, screen size is expressed by the length of its diagonal, measured in inches.

Approximate Screen Width

Approximate Screen Height

The aspect ratio of the long side of the screen to its short side

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Screen resolution shows the number of pixels vertically and horizontally. Higher resolution means sharper image detail.

Information about the number of pixels per centimeter or inch of screen. Higher density allows you to display information on the screen with clearer details.

The screen color depth reflects the total number of bits used for color components in one pixel. Information about the maximum number of colors that the screen can display.

The approximate percentage of the screen area on the front of the device.

Information about other functions and features of the screen.

Sensors

Different sensors perform various quantitative measurements and convert physical indicators into signals that the mobile device recognizes.

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

Rear camera

The main camera of a mobile device is usually located on its rear panel and can be combined with one or more additional cameras.

Information about the type of camera sensor. One of the most widely used types of sensors in cameras of mobile devices. These are CMOS, BSI, ISOCELL, etc.

Aperture (also known as aperture, aperture, or f-number) is a measure of the size of the lens aperture, which determines the amount of light entering the sensor. The lower the f-number, the larger the aperture and the more light reaches the sensor. Usually, the number f corresponding to the maximum possible aperture of the diaphragm is indicated.

Information on the number of optical elements (lenses) of the camera.

One of the main characteristics of cameras is resolution. It represents the number of horizontal and vertical pixels in the image. For convenience, smartphone manufacturers often indicate resolution in megapixels, indicating the approximate number of pixels in millions.

Information about the maximum resolution of the video that the camera can record.

Information about the maximum recording speed (frames per second, fps) supported by the camera at maximum resolution. Some of the most basic video recording speeds are 24 fps, 25 fps, 30 fps, 60 fps.

Information about additional software and hardware functions of the rear (rear) camera.

Front-camera

Smartphones have one or more front cameras of various designs. Pop-up camera, PTZ camera, cut-out or hole in the display, camera under the display.

Aperture (also known as aperture, aperture, or f-number) is a measure of the size of the lens aperture, which determines the amount of light entering the sensor. The lower the f-number, the larger the aperture and the more light reaches the sensor. Usually, the number f corresponding to the maximum possible aperture of the diaphragm is indicated.

Information about the maximum resolution of the video that the camera can record.

Information about the maximum recording speed (frames per second, fps) supported by the camera at maximum resolution. Some of the most basic video recording speeds are 24 fps, 25 fps, 30 fps, 60 fps.

Audio

Information about the type of speakers and audio technologies supported by the device.

Speaker. This is a device that plays various sounds, such as music, calls, ringtones, etc. Information about the types of speakers used by the device.

Radio

The mobile radio is a built-in FM receiver.

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

Positioning

Information about the navigation and location technologies supported by the device.

The location is determined using different satellite navigation systems that track the autonomous geospatial location of the device that supports them. The most commonly used satellite navigation systems. These are GPS and GLONASS. There are also non-satellite technologies for the localization of mobile devices, such as EOTD, Enhanced 911, GSM Cell ID.

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Wi-fi It is a technology that provides wireless communications for transferring data over short distances between different devices.

Wi-Fi communication between devices is carried out through IEEE 802.11 standards. Some devices have the ability to serve as Wi-Fi Hotspot, providing Internet access for other devices. Wi-Fi Direct (Wi-Fi P2P). This is another useful standard that allows devices to communicate with each other without the need for a wireless access point (WAP).

Bluetooth

Bluetooth This is the standard for secure wireless data transfer between different devices of different types over short distances.

There are several versions of Bluetooth, with each subsequent one improving communication speed, coverage, and facilitating easier detection and connection of devices. Information about the Bluetooth version of the device.

Bluetooth uses different profiles and protocols that provide faster data exchange, energy saving, improved device discovery, etc. Some of these profiles and protocols that the device supports are shown here.

USB (Universal Serial Bus). It is an industry standard that allows various electronic devices to exchange data.

The USB standard has several versions: USB 1.0 (1996), USB 2.0 (2000), USB 3.0 (2008), etc. In each subsequent version, the data transfer speed increases.

The USB interface in mobile devices can be used for various purposes, for example, to recharge the battery, use the device as mass storage, host, etc.

Headphone jack

This is an audio connector, which is also called an audio jack. The most widely used standard in mobile devices. This is a 3.5mm headphone jack.

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

Device connection

Information about other important connection technologies supported by the device.

Information about one of the most used connection technologies supported by the device.

Browser

Web browser This is a software application for accessing and viewing information on the Internet.

Information about some basic features and standards supported by the device’s browser.

Sound file formats / codecs

Mobile devices support different formats and codecs for audio files, which respectively store and encode / decode digital audio data.

A list of some of the main formats and codecs for audio files that are standardly supported by the device.

Video file formats / codecs

Mobile devices support different formats and codecs for video files, which respectively store and encode / decode digital video data.

List of some basic formats and codecs for video files that are standardly supported by the device.

Battery

Mobile device batteries differ in capacity and technology. They provide the electrical charge necessary for their functioning.

The battery capacity indicates the maximum charge that it can save, measured in milliampere-hours.

The type of battery is determined by its structure and, more precisely, the chemicals used. There are different types of batteries, and most often in mobile devices, lithium-ion and lithium-ion-polymer batteries are used.

Talk time in 2G. This is the period of time for which the battery charge is completely discharged during a continuous conversation in a 2G network.

Talk time in 3G. This is the period of time for which the battery charge is completely discharged during a continuous conversation in a 3G network.

Talk time in 4G. This is the period of time for which the battery charge is completely discharged during a continuous conversation in a 4G network.

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

Additional characteristics

Some devices have features that do not belong to the above categories, but it is important to point to them.

Information about other characteristics of the device.