LCD repair on Wi-Fi + Cellular version

Hello guys,

i have three questions, please let me know what you think:

• am i somewhere able to obtain those magnets (or metal) things that are glued to the original display? see the image. i think the purpose is to hold better the front of the cases which covers the display which usually has some magnets as well but im not sure.

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• there are two types of display, with some dots and without (marked red). some sellers say it's ok to use the display without dots but the original had them and they are connected to some connectors in the cellular version (not in the Wi-Fi version tho). What is their purpose and can i go without them?

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• can i use ipad air 5th (2022) screen Wi-Fi + Cellular? (i heard they are same in 4th and 5th version and can be used between each other)
• I have 4th (2020) Wi-Fi + Cellular A2072 version. SN:GG7DL3ADQ191

Thank you!