How popular is iMessage at your college? Is it a big deal (or less preferable) to see green bubbles for you or anyone you know or have met (if you use iMessage)?

Student Lounge College Life
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I’m in CC and am planning to transfer colleges next semester, and use an Android phone (S20 FE). I do have my sister’s old iPhone SE which I could use for texting just in case. What messaging app(s) do you or your friends use? Have you or anyone else at your school reject people from texting groups because of green bubbles on iMessage?