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iPad mini

The iPad mini was first released by Apple on October 24, 2012 during a special event in San Jose, California.
The iPad mini features an A5 dual-core processor, a 7.9-inch LED-backlit Multi-Touch display with a resolution of 1024×768 pixels, a 5-megapixel rear camera, and a 1.2-megapixel front camera.
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iPad mini 2 with Retina Display

The iPad mini 2, equipped with a Retina display, was launched by Apple on October 22, 2013 at 10:00 AM (Beijing time: 1:00 AM on October 23) in San Francisco.
The iPad mini 2 is available in Space Gray and Silver colors, featuring a traditional 4:3 aspect ratio and an all-aluminum back.
It comes in four versions: 16GB, 32GB, 64GB, and 128GB, and is powered by the first 64-bit mobile processor, the A7 dual-core processor, with 1GB RAM and a PowerVR G6430 GPU.
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iPad mini 3

The iPad mini 3 was released by Apple on October 16, 2014 at 1 PM (Beijing time: 1 AM on October 17) at the Town Hall in Cupertino, California.
It measures 200 mm in height, 134.7 mm in width, and 7.5 mm in thickness, weighing 341 grams. The iPad mini 3 features a Retina display with a pixel density of 326 PPI. The back is available in Gold, Silver, and Space Gray colors.
It has a 1.2-megapixel front camera and a 5-megapixel rear camera, with three storage options: 16GB, 64GB, and 128GB; it ships with iOS 8 and is powered by the A7 chip with 1GB of memory, supporting Touch ID. The iPad mini 3 is available in both WLAN and WLAN+Cellular models, the latter supporting cellular network functionality and all TD-LTE and FDD-LTE standards, as well as TD-SCDMA, DC-HSDPA, HSPA+, and other high-speed networks.
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iPad mini 4

The iPad mini 4 was introduced by Apple Inc on September 9, 2015 at 10 AM (Beijing time: 1 AM on September 10) during a product launch event at the Flint Center in Cupertino, California.
It measures 203.2 × 134.8 × 6.1 mm, weighing 298.8 grams for the WLAN model and 304 grams for the WLAN+Cellular model, available in Silver, Space Gray, and Gold colors.
The iPad mini 4 is powered by the A8 processor and iPadOS, supports split-screen multitasking, and has a built-in 19.1 watt-hour lithium polymer battery, available in four storage options: 16GB, 32GB, 64GB, and 128GB; it features dual microphones and a Lightning connector, with an 8-megapixel camera.
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iPad mini 5

The iPad mini 5 was released by Apple on March 18, 2019.
It measures 203.2 mm in height, 134.8 mm in width, and 6.1 mm in thickness, weighing 300.5 grams for the WLAN model and 308.2 grams for the WLAN+Cellular model; it is available in Space Gray, Silver, and Gold colors.
The iPad mini 5 is powered by the A12 Bionic chip, features a Retina display with True Tone and wide color support; it is compatible with the first-generation Apple Pencil.
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iPad mini 6

The iPad mini 6 was launched by Apple on September 15, 2021 via their official website.
The iPad mini 6 is powered by the A15 Bionic chip and iPadOS 15; it features a full-screen design and Touch ID functionality, with the WLAN+Cellular model supporting 5G connectivity; it is compatible with the second-generation Apple Pencil.