School is requiring WhatsApp? Is it removable later?

I have an iPhone and have never installed anything from Google, Meta, or hardly anyone. I don't want cross-app tracking or data harvesting stuff on my phone.

I'm going on a school trip that I paid a lot for and just now they're telling me that we're supposed to have WhatsApp on our phone. I don't want anything from Meta on my phone, but it's required. I've heard that on Android, once you put a product from Meta (specifically Facebook) …

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