2Do isn't syncing in the background
On iPhone and iPad, common causes are:
- You force-quit 2Do. If you have a habit of force quitting apps, or use apps that force quit others to "clean memory", 2Do cannot sync in the background at all.
- Background App Refresh is off. Turn it on under iOS Settings > General > Background App Refresh > 2Do.
- Sync automatically or Push Sync is off. Both live in 2Do's Settings > Sync. Sync automatically allows sync without you asking, and Push Sync lets the service wake 2Do when something changes on another device.
- You're on a poor connection. iOS may delay refresh cycles.
- Heavy data load. Large changes over slow networks can take longer than a background cycle allows.
iOS decides when apps get background time, so background sync is regular rather than instant. If it feels stale, pull down on the task list to sync straight away.
On Android:
- Open 2Do Settings > Sync setup > Sync automatically and choose an interval other than Never. Android schedules the background work, so the interval does not guarantee an exact start time.
- Check whether the phone is restricting 2Do's background activity. Open 2Do Settings > Notifications > More... > Ignore battery optimizations to see 2Do's current status and open the phone's battery controls. The system labels vary by manufacturer.
- Check your connection and let a manual sync finish before leaving the app. Pull down on the task list to start it.
See Android sync settings and notification permissions for more detail.