Writing On Ipad Air 2

Dimensions: 240 x 169.5 x 6.1 mm
Weight: 444 g
SoC: Apple A8X
CPU: Apple Cyclone ARMv8, 1500 MHz, Cores: 3
GPU: PowerVR GXA6850, Cores: 8
RAM: 2 GB
Storage: 16 GB, 64 GB, 128 GB
Display: 9.7 in, IPS, 2048 x 1536 pixels, 24 bit
Battery: 8600 mAh, Li-Polymer
OS: iOS 8.1
Camera: 3264 x 2448 pixels, 1920 x 1080 pixels, 30 fps
SIM card: Nano-SIM
Wi-Fi: a, b, g, n, n 5GHz, ac, Dual band, Wi-Fi Hotspot
USB: 2.0
Bluetooth: 4.0
Positioning: GPS, A-GPS, GLONASS

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Brand Brand name of the company that manufactures the device.	Apple
Model Model name of the device.	iPad Air 2
Model alias Аlternative names, under which the model is known.	A1566 A1567

Width Information about the width, i.e. the horizontal side of the device when it is used in its standard orientation.	240 mm (millimeters) 24 cm (centimeters) 0.787 ft (feet) 9.449 in (inches)
Height Information about the height, i.e. the vertical side of the device when it is used in its standard orientation.	169.5 mm (millimeters) 16.95 cm (centimeters) 0.556 ft (feet) 6.673 in (inches)
Thickness Information about the thickness/depth of the device in different measurement units.	6.1 mm (millimeters) 0.61 cm (centimeters) 0.02 ft (feet) 0.24 in (inches)
Weight Information about the weight of the device in different measurement units.	444 g (grams) 0.98 lbs (pounds) 15.66 oz (ounces)
Volume Estimated volume of the device, calculated from the dimensions provided by the manufacturer. Applies for devices in the form of a rectangular parallelepiped.	248.15 cm³ (cubic centimeters) 15.07 in³ (cubic inches)
Colors Information about the colors, in which the device is available in the market.	Silver Gold Gray
Body materials Materials used in the fabrication of the device's body.	Aluminium alloy

SIM card type Information about the type and size (form factor) of the SIM card used in the device.	Nano-SIM (4FF - fourth form factor, since 2012, 12.30 x 8.80 x 0.67 mm)
Number of SIM cards Information about the number of SIM cards, supported by the device.	1

GSM 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. It has been improved with the addition of General Packet Radio Services (GPRS) and later via the Enhanced Data rates for GSM Evolution (EDGE) technology.	GSM 850 MHz GSM 900 MHz GSM 1800 MHz GSM 1900 MHz
CDMA CDMA (Code-Division Multiple Access) is a channel access method for communications within mobile networks. Compared to other 2G and 2.5G standards like GSM and TDMA, it provides increased data transfer speeds and allows more subscribers to connect simultaneously to the network.	CDMA 800 MHz CDMA 1900 MHz
CDMA2000 CDMA2000 is a family of 3G standards for mobile networks based on CDMA and providing high-quality voice and broadband data services over wireless networks. Its advantages include stronger signal, fewer drop-offs and breakups, analog capabilities, very high spectral capacity, etc.	1xEV-DO Rev. A 1xEV-DO Rev. B
UMTS 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 and its major advantage is the provision of greater bandwidth and spectral efficiency, due to the W-CDMA technology.	UMTS 850 MHz UMTS 900 MHz UMTS 1700/2100 MHz UMTS 1900 MHz UMTS 2100 MHz
LTE LTE is deemed to be the fourth generation (4G) of mobile communications technology. It has been developed by the 3GPP based on the GSM/EDGE and UMTS/HSPA technologies in order to increase the speed and capacity of wireless data networks. A further development of the technology is called LTE Advanced.	LTE-TDD 1900 MHz (B39) LTE-TDD 2300 MHz (B40) LTE-TDD 2500 MHz (B41) LTE-TDD 2600 MHz (B38) LTE 700 MHz Class 13 LTE 700 MHz Class 17 LTE 800 MHz LTE 850 MHz LTE 900 MHz LTE 1700/2100 MHz LTE 1800 MHz LTE 1900 MHz LTE 2100 MHz LTE 2600 MHz

Mobile network technologies

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 and their respective uplink and downlink bandwidth.

UMTS (384 kbit/s )
EDGE
GPRS
HSPA (HSUPA 5.76 Mbit/s , HSDPA 42 Mbit/s )
LTE Cat 4 (51.0 Mbit/s , 150.8 Mbit/s )
EV-DO Rev. A (1.8 Mbit/s , 3.1 Mbit/s )
EV-DO Rev. B (5.4 Mbit/s , 9.3/14.7 Mbit/s )

Operating system (OS)

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

iOS 8.1
iOS 9

SoC The SoC integrates different hardware components such as the CPU, GPU, memory, peripherals, interfaces, etc., as well as software for their functioning.	Apple A8X
Process technology 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.	20 nm (nanometers)
CPU 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.	Apple Cyclone ARMv8
CPU bits The CPU bits are determined by the bit-size of the processor registers, address buses and data buses. 64-bit CPUs provide better performance than 32-bit ones, which on their part perform better than 16-bit processors.	64 bit
Instruction set The instruction set architecture (ISA) is a set of commands used by the software to manage the CPU's work. Information about the set of instructions the processor can execute.	ARMv8-A
Level 1 cache memory (L1) The cache memory is used by the processor in order to shorten the time needed to access data and instructions that a frequently used. The L1 (level 1) cache memory has a small volume, but operates faster than the RAM and the rest cache memory levels. If the processor does not find the data needed in L1, it continues to look for it in the L2 cache memory. In some processors the search in L1 and L2 is simultaneous.	64 KB + 64 KB (kilobytes)
Level 2 cache memory (L2) The L2 (level 2) cache memory is slower than L1, but has a larger capacity, instead, which allows it to cache more data. Just like L1, it is much faster than the system memory (RAM). If the CPU does not find the data needed in L2, it proceeds to look for them in the L3 cache memory (if there is such) or in the RAM.	2048 KB (kilobytes) 2 MB (megabytes)
Level 3 cache memory (L3) The L3 (level 3) cache memory is slower than L2, but has a larger capacity, instead, which allows it to cache more data. Just like L2, it is much faster than the system memory (RAM).	4096 KB (kilobytes) 4 MB (megabytes)
CPU cores A CPU 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.	3
CPU frequency The frequency of the processor describes its clock rate in cycles per second. It is measured in Megahertz (MHz) or Gigahertz (GHz).	1500 MHz (megahertz)
GPU GPU is a graphical processing unit, which handles computation for 2D/3D graphics applications. In mobile devices GPU is usually utilized by games, UI, video playback, etc. GPU can also perform computation in applications traditionally handled by the CPU.	PowerVR GXA6850
GPU cores Similar to the CPU, the GPU consists of processing units called cores. They handle the computation of graphics in various applications.	8
RAM capacity 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.	2 GB (gigabytes)
RAM type Information about the type of RAM used by the device.	LPDDR3
	M8 motion coprocessor

Storage

Information about the capacity of the built-in storage of the device. Sometimes one and the same model may is offered in variants with different internal storage capacity.

16 GB (gigabytes)
64 GB (gigabytes)
128 GB (gigabytes)

Type/technology One of the main characteristics of the display is its type/technology, on which depends its performance.	IPS
Diagonal size In mobile devices display size is represented by the length of its diagonal measured in inches.	9.7 in (inches) 246.38 mm (millimeters) 24.64 cm (centimeters)
Width Approximate width of the display	7.76 in (inches) 197.1 mm (millimeters) 19.71 cm (centimeters)
Height Approximate height of the display	5.82 in (inches) 147.83 mm (millimeters) 14.78 cm (centimeters)
Aspect ratio The ratio between the long and the short side of the display	1.333:1 4:3
Resolution 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.	2048 x 1536 pixels
Pixel density 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.	264 ppi (pixels per inch) 103 ppcm (pixels per centimeter)
Color depth 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.	24 bit 16777216 colors
Display area The estimated percentage of the screen area from the device's front area.	71.86 % (percent)
Other features Information about other functions and features of the display.	Capacitive Multi-touch
	Oleophobic (lipophobic) coating LED-backlit Retina display Full Lamination Technology Antireflective coating

Sensors

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

Light
Accelerometer
Compass
Gyroscope
Barometer
Fingerprint
Hall

Sensor type Information about the sensor type of the camera. Some of the most widely used types of image sensors on mobile devices are CMOS, BSI, ISOCELL, etc.	CMOS BSI (backside illumination)
Aperture 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.	f/2.4
Number of lenses Information about the number of lenses used by the optical system of the camera.	5
Image resolution One of the main characteristics of the cameras is their image resolution. It states the number of pixels on the horizontal and vertical dimensions of the image, which can also be shown in megapixels that indicate the approximate number of pixels in millions.	3264 x 2448 pixels 7.99 MP (megapixels)
Video resolution Information about the maximum resolution at which the rear camera can shoot videos.	1920 x 1080 pixels 2.07 MP (megapixels)
Video FPS Information about the maximum number of frames per second (fps) supported by the rear camera while recording video at the maximum resolution. Some of the main standard frame rates for recording and playing video are 24 fps, 25 fps, 30 fps, 60 fps.	30 fps (frames per second)
Features Information about additional software and hardware features of the rear camera which improve its overall performance.	Autofocus Continuous shooting Digital image stabilization Geotagging Panorama HDR Touch focus Face detection Exposure compensation Self-timer
	IR filter

Aperture 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.	f/2.2
Video resolution Information about the maximum resolution of the videos shot by the front camera.	1280 x 720 pixels 0.92 MP (megapixels)
Video FPS Digital cameras are able to shoot videos at different frames per second (fps). Some of the main standard frame rates for recording and playing video are 24 fps, 25 fps, 30 fps, 60 fps. Information about the maximum possible fps for shooting videos at the maximum possible resolution.	30 fps (frames per second)
	1.2 MP

Speaker 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.	Loudspeaker Stereo speakers
	MAX98304

Radio

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

Tracking/Positioning

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 and the GLONASS. There are also non-satellite technologies for locating mobile devices such as the Enhanced Observed Time Difference, Enhanced 911, GSM Cell ID.

GPS
A-GPS
GLONASS

Wi-Fi

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

802.11a (IEEE 802.11a-1999)
802.11b (IEEE 802.11b-1999)
802.11g (IEEE 802.11g-2003)
802.11n (IEEE 802.11n-2009)
802.11n 5GHz
802.11ac (IEEE 802.11ac)
Dual band
Wi-Fi Hotspot

Version The technology has several versions, which improve the connection speed, range, connectivity and discoverability of the devices. Information about the Bluetooth version of the device.	4.0
Features Bluetooth uses various profiles and protocols related to faster exchange of data, energy saving, better device discoverability, etc. Some of those supported by the device are listed here.	A2DP (Advanced Audio Distribution Profile) EDR (Enhanced Data Rate)

Version 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.	2.0
Features Тhe USB interface in mobile devices may be used for different purposes such as battery charging, using the device as a mass storage, host, etc.	Charging Proprietary

Headphone jack

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

Yes

Connectivity

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

Computer sync
OTA sync
TV-Out

Browser

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

HTML
HTML5
CSS 3

Audio file formats/codecs

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

AAC (Advanced Audio Coding)
eAAC+ / aacPlus v2 / HE-AAC v2
M4A (MPEG-4 Audio, .m4a)
MP3 (MPEG-2 Audio Layer II, .mp3)
WAV (Waveform Audio File Format, .wav, .wave)

Video file formats/codecs

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

AVI (Audio Video Interleaved, .avi)
H.263
H.264 / MPEG-4 Part 10 / AVC video
QuickTime (.mov, .qt)
MPEG-4

Capacity The capacity of a battery shows the maximum charge, which it can store, measured in mili-Ampere hours.	8600 mAh (milliampere-hours)
Type The battery type is determined by its structure and more specifically, by the chemicals used in it. There are different battery types and some of the most commonly used in mobile devices are the lithium-ion (Li-Ion) and the lithium-ion polymer battery (Li-Polymer).	Li-Polymer
2G talk time 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.	10 h (hours) 600 min (minutes) 0.4 days
3G talk time 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.	10 h (hours) 600 min (minutes) 0.4 days
4G talk time 4G talk time is the time period a battery charge will last, if one is constantly talking on the phone in a 4G cellular network.	10 h (hours) 600 min (minutes) 0.4 days
Features Information about some additional features of the device's battery.	Non-removable

Additional features

Information about other features of the device.

437 g (Wi-Fi version)