
If you experience trouble with your iPhone calendar not syncing when not connected to the internet, it may be because your Calendar app does not have access to mobile data. Make Sure Calendar Has Access to Mobile Data We've already shown you how to turn on Calendars for your iCloud account above, so here I'll select Gmail. Here's how to check this setting on your iPhone: If your iPhone calendar is not syncing to your other devices, make sure that your devices are able to send and receive calendar data for all your accounts. Enable Calendar Synchronization for All Accounts This may act as a kind of soft "reset." Give it a few minutes, then check to see if your calendars are syncing across devices now. If Calendars is already on, you can also try toggling it off, then back on again. Tap Merge to include all existing local calendars on your iPhone.If Calendars is toggled off, toggle it on.Check your iCloud storage limit: if you have used up all your iCloud storage, your calendar may not sync across devices.įor your iPhone Calendar app to sync across all your Apple devices, you'll need to make sure iCloud has access to it.


Go through each of your devices and check that the date and time are correct.

If the system is down, your iPhone calendar is not syncing, and you'll need to wait until the system is back up and check again.
