Prompt add to home screen is not working

[hanjeahwan]

Even get 100 marks of PWA in google chrome audit analysis, but i when i use my mobile to access my website also not showing add to home screen.

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[hackuun]

Confirm, how to set Prompt? @pi0

[bovas85]

Did you guys serve the page from HTTPS?
It does work for me on Android (or Chrome iOS, not Safari)

[vadxq]

Me too,but sometimes it work
from HTTPS