📝 Note
This article applies to
OS: iOS
Product edition: inSync Client on iOS mobile devices
Problem description
Scheduled and manual backups on iOS devices fail to complete if inSync App goes to background.
Cause
The ongoing backup task is continued in a background thread when inSync App goes into the background on iOS devices.
iOS allows inSync App to run for 180 seconds in the background thread. After 180 seconds, iOS kills the application forcefully.
This is a the default behavior of iOS and there is no workaround to restart the backup until inSync App is brought to the foreground.
Resolution
Enable device trace, so that:
The inSync App on your device gets registered for "Significant-change-location".
Device trace will trigger when the device location changes significantly and will wake up the inSync App for the next 180 seconds.
With the callback, inSync App checks if it is time to back up and tries to connect with inSync Server to trigger a backup.
📝 Note
Disclaimer
The term "Significant" is not explicit in "Significant-change-location". iOS determines this at runtime.
Callback may never come to the app if the device has not moved.