didn't know that about iOS. On android the standard messaging app, plus other apps like whatsapp allow this. It's extremely convenient.
What about privacy for notifications when the screen is locked? For example, on android, when my phone is locked, notifications pop up, but you can't see who is calling/texting. Is that the case with iOS?
That's been true for iOS for years now, although I can't guarantee that all messaging apps support that mode of operation.