It supports 4G networks, along with the third and second, and you can install two SIM cards, a nano SIM, in addition to an eSIM electronic chip. The iPad 9 2021 comes with a 10.2-inch Retina IPS LCD screen with a resolution of 1620 * 2160 pixels and this resolution gives a pixel density of about 265 pixels per inch. The dimensions of the display are 4:3 and the screen occupies about 74% of the front end, the side edges are good, but the bottom and top are significantly larger. It works with the iPadOS 15 operating system for iPads, which is the latest version currently available, and there is no concern about system updates, as Apple guarantees you to continue receiving the upcoming updates for as long as possible. The processor used is the Apple A13 Bionic processor, which offers 20% better performance when compared to the previous 8th generation, a hexa-core processor with 7 nano manufacturing technology with a quad-core Apple GPU graphics processor and a Neural Engine for artificial intelligence.