a1538 is ipad mini

a1538 is ipad mini4. iPad mini4 is a tablet computer product released by Apple on September 9, 2015. It is equipped with an A8 processor and iPadOS operating system. It supports split-screen multitasking functions. It has a built-in 19.1Wh lithium polymer rechargeable battery and uses a dual microphone setup. It uses the Lightning interface and uses an 8-megapixel camera.

#The operating environment of this tutorial: iPadOS 14 system, iPad mini 4.

a1538 is ipad mini4.

iPad mini 4 was launched by Apple Inc at 10 a.m. on September 9, 2015 (1 a.m. on September 10, 2015, Beijing time) in Cupertino, California, USA. The Flint Theater in North Carolina held a new product launch conference to release tablet computer products.

iPad mini 4 is equipped with an A8 processor and iPadOS operating system, supports split-screen multitasking, has a built-in 19.1Wh lithium polymer rechargeable battery, and is available in four capacity versions of 16GB, 32GB, 64GB and 128GB; it adopts dual Microphone settings, using Lightning interface; using 8-megapixel camera.

Body design

iPad mini 4 size is 203.2×134.8×6.1 mm, wireless LAN The model weighs 298.8 grams, while the wireless LAN and cellular model weighs 304 grams. It comes in three colors: silver, space gray and gold.

Wireless LAN model203.2 mm ( 8.0 inches)134.8 mm (5.3 inches)6.1 mm (0.24 inches)298.8 g (0.65 lbs) Wireless LAN Cellular Model203.2 mm (8.0 in)134.8 mm (5.3 inches) 6.1 mm (0.24 inches) 304 grams ( 0.67 lbs)

Features

• Processor

  iPad mini 4 is equipped with A8 dual-core processing The processor is clocked at 1.5GHz, which is faster than the iPhone 6/6 Plus A8 1.4GHz, and exceeds the iPad mini 2/3 A7 1.3GHz. Both single and multi-thread performance have been improved by more than 25%, and it supports iOS9 split-screen multitasking function.

  The A8 processor can efficiently measure your activity through many advanced sensors, including a new barometer. The combination of A8 and M8 can achieve a better level of performance experience and power consumption.

  

  The new generation A8 chip has 25% higher CPU performance and 50% higher graphics performance than the A7 chip. And because it uses a 20nm process, its performance is also better than before. Official data shows that the battery life of both iPhone 6 models has improved compared to the previous generation.

  In order to give full play to the graphics processing performance of the A8 chip and iOS 8, Apple has launched Metal technology, which allows developers to create more realistic console-style games for the iPhone. Metal technology is optimized for CPU and graphics processors to work together to deliver detailed images and complex visual effects.

  The M8 motion coprocessor continuously measures data from the accelerometer, compass, gyroscope, and new barometer, offloading more workload to the A8 chip, thus improving performance. Not only that, these sensors also have more functions, such as measuring the number of steps, distance and elevation changes you take.

• Screen

  iPad mini 4 uses a 7.9-inch fully laminated IPS LCD screen with an sRGB color gamut of 99%. In terms of brightness, The highest white point brightness in the center of iPad mini 4 is 404nits. In terms of contrast, the static contrast of iPad mini 4 is almost twice that of iPad mini 3.

• Taking photos

  The iPad mini 4 uses an 8-megapixel camera with higher resolution than the iPad mini 3; in terms of white balance, it is better for outdoor scenes Realistic color restoration and lower noise in night shots.

• Body design

  The iPad mini 4 has a slimmer body, weighing only 298.8 grams, and uses a single row of speakers and a Lightning interface. Transfer speed is faster.

• Touch ID

  iPad mini4 is equipped with Touch ID, which allows you to easily and securely unlock the iPad with just a touch of your finger. Important Information is also protected.

• Accessibility functions

  The accessibility features of iPad mini 4 can help people with disabilities use them, targeting vision, hearing, physical and mobility abilities, as well as learning and Provides built-in functional support for reading and writing.

Operating environment

iPad mini 4 operating environment temperature: 0°C to 35°C (32°F to 95°F); non-operating temperature: -20°C to 45°C (-4°F to 113°F); relative humidity: 5% to 95% non-condensing; operating altitude: tested up to 3000 meters (10,000 feet).

Configuration parameters

iPad mini 4 size parameters

Model number	Height	##Width	##Thickness	Weight

1080p high-definition video shooting (30fps); 1.2 million pixel photos; Works over Wi-Fi or cellular to any device that supports FaceTime Make video calls##MicrophoneCellular and Wireless ConnectionWireless LAN models: Unlock iPad Protect personal data in apps Purchase or download in the App StoreIn-app payments on iPad with Touch ID##Power and batteryAll modelsAudio playbackSupported audio formatsVideo playbackEmail attachment support

ipad mini 4 configuration parameters

Capacity	Wireless LAN model: 16GB/32GB/64GB/128GB Wireless LANCellular Network Model: 16GB/32GB/64GB/128GB
Buttons and ports	Built-in stereo speakers; Lightning interface; Home screen/touch ID sensor; 3.5mm headphone jack; On/Off-Sleep/Wake; Dual microphone; Volume up/down; Nano-SIM card slot (Wireless LAN Cellular models)
Weight and Dimensions	Wireless LAN models: Height: 203.2 mm (8.0 inches) Width: 134.8 mm (5.3 inches) Thickness: 6.1 mm (0.24 inches) Weight: 298.8 grams (0.65 lbs) Wireless LAN Cellular Model: Height: 203.2 mm (8.0 inches) Width: 134.8 mm (5.3 inches) Thickness: 6.1 mm (0.24 inches) Weight: 304 grams (0.67 lbs)
##Display	Retina display; 7.9-inch (diagonal) LED-backlit multi-touch display; 2048x1536 resolution, 326ppi; Use anti-oil stain and anti-fingerprint coating; fully laminated display; anti-reflective coating;
Chip	64-bit architecture A8 chip; M8 motion coprocessor
Camera	8 million pixel camera; Auto focus; Panoramic mode ( Up to 43 million pixels); Auto HDR photos; Exposure control; Burst snapshot mode; Tap focus; Timekeeping mode; ƒ/2.4 aperture; Five-element lens; Hybrid infrared filter; Back-illuminated photosensitive ; Automatic image stabilization function; Photo geotagging function
##Video shooting	Slow-motion video (120fps); Time-lapse video (supports anti-shake function); Video anti-shake function; Three times video zoom; Video geo-tagging function
FaceTime HD Camera	ƒ/2.2 aperture; 720p high-definition video shooting; Back-illuminated photosensitive; Auto HDR photos and videos; Burst snapshot mode; Exposure control; Timer mode
FaceTime
Dual microphones for calls, video capture and audio Recording
	Wireless network (802.11a/b/g/n/ac); Dual band (2.4GHz and 5GHz); Support HT80 MIMO technology; Bluetooth 4.2 technology; Wireless LAN cellular network model A1550 model; Wireless network (802.11 a/b/g/n/ac); Dual band (2.4GHz and 5GHz); Support HT80 MIMO technology; Bluetooth 4.2 technology; UMTS (WCDMA)/HSPA/HSPA/DC‑HSDPA (850, 900, 1700/2100, 1900, 2100MHz) ; GSM/EDGE (850, 900, 1800, 1900MHz); CDMA EV-DO Rev. A (800, 1900MHz); FDD-LTE (frequency band 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29); TD-LTE (band 38, 39, 40, 41); Cellular data only
SIM card	Nano-SIM card
Location function	All models ： Digital compass wireless network iBeacon micro-positioning; Wireless LAN cellular network model: Assisted GPS and GLONASS positioning system cellular Network
Sensor	##Touch ID; 三Axis gyroscope; Acceleration sensor; Barometer; Ambient light sensor
##Touch ID
Apple Pay
	Built-in 19.1Wh lithium polymer rechargeable battery Use the wireless network to browse the web, watch videos, or listen to music. The usage time can be up to 10 hours. Charging through the power adapter or the USB port of your computer Wireless LAN Cellular Network Model Use cellular network to browse the web for up to 9 hours
	: AAC (8 to 320Kbps), Protected AAC (from iTunes Store), HE-AAC, MP3 (8 to 320Kbps), MP3 VBR, Dolby Digital (AC-3), Dolby Digital Plus (E-AC-3), Audible (Formats 2, 3, 4, Audible Enhanced Audio, AAX and AAX), Apple Fidelity Compression, AIFF and WAV; User-adjustable volume limit
Playback mirroring, photos, audio and video output to Apple TV* (2nd generation or later)	Video mirroring and video output support: via Lightning Digital AV Converter and Lightning to VGA Converter, up to Up to 1080p (converter needs to be purchased separately) Supported video formats: H.264 video: supports up to 4K, 30fps, High Profile level4.2 encoding, and its audio is AAC that supports up to 160Kbps, 48kHz, and stereo -LC format, or Dolby format supporting up to 1008Kbps, 48kHz, stereo or multi-channel, and file formats .m4v, .mp4 and .mov; MPEG-4 video: supporting up to 2.5Mbps, 640x480 pixels, 30fps, Simple Profile Encoding with audio in AAC-LC format supporting up to 160 Kbps, 48kHz per channel, stereo, or Dolby format supporting up to 1008Kbps, 48kHz, stereo or multi-channel, in .m4v, .mp4, and .mov file formats ; Motion JPEG (M-JPEG): supports up to 35Mbps, 1280x720 pixels, 30fps, its audio is ulaw format, PCM format stereo, and the file format is .avi
	Viewable document types .jpg, .tiff, .gif (image); .doc and .docx (Microsoft Word); .htm and .html (webpage); .key (Keynote); .numbers (Numbers table); .pages (Pages document); .pdf (Preview and Adobe Acrobat); .ppt and .pptx (Microsoft PowerPoint); .txt ( text); .rtf (rich text format); .vcf (contact information); .xls and .xlsx (Microsoft Excel); .zip; .ics

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