https://wccftech.com/google-is-working-on-a-fix-for-full-quality-unlimited-photo-backups-for-iphones/

An loophole had recently been found which allowed users to get free full quality photo backups to Google Photos, for free, on iPhone. This was happening since sometime, due to Apple's usage of HEIC format to capture and save photos. The issue gained traction when Google announced Pixel 4, without unlimited photo backups, amongst other issues. Google has finally responded to this problem and instead of providing unlimited backups for Pixel 4 too, they say that the bug is going to be fixed.

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