This makes such a difference that I do it weekly.
December 21, 2020 15:42 GMT (07:42 PST) | Topic: iOS
No matter how good the memory management is on iOS, it s not perfect. But this is a simple trick that allows you to clear the system RAM without rebooting your iPhone.
This trick works for iPhones with Face ID and Touch ID, and works with iOS 14 and above. On top of doing this weekly, I now also reboot my iPhone and iPad monthly, as this is considered to be the best way to keep any malware off of it.
Must read: iPhone with Face ID