A:AnswerTo answer your question, no, it is not plastic. What you feel is the fingerprint resistant oleophobic coating that Apple applies to reduce smudging. The reason why it may feel more plasticky is because it is a lower quality glass if you want the better quality glass you have to step up to the pro level iPads. This is the same situation with the aluminum body Apple watches and the stainless steel body Apple watches the aluminum body Apple watches come with an ion X glass while the stainless steel body Apple watches come with a sapphire crystal glass. I hope this helps.
A:AnswerYes. Just setup your appleid and follow some apple support or Best Buy GSQaD could help you further. From Apple, “ You can use FaceTime over Wi-Fi1 or over cellular on supported iOS or iPadOS devices.2 ”. Happy hunting
A:AnswerThere should be no issues.
WI-FI is standard protocol world wide.
Unlocked has nothing to do with a Wi-Fi only device. Data services, ATT ,etc are what unlocked is all about.
With this Wi-Fi only device cannot have a data plan - there is on SIM slot anyway.