@xloong iPhone 上的 syncthing 是 Möbius Sync ，以下是官方介绍：Apple iOS restricts apps from running continuously in the background, but apps can run for short times sporadically. Möbius Sync uses various methods to invoke background behaviour. The minimum interval between quick syncs and power syncs can be configured under Settings, but iOS schedules background activity in an adaptive manner that is not predicatable and sometimes counter-intuitive. It may take 24 hours to start to sync but you can expect a total of 1-2h of sync activity per day once stable.