Resync Calendar On Iphone. Resetting the calendar on your iphone can help you stay organized and keep track of upcoming events and appointments. 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.

Here’s how to sync your macbook and iphone calendars using icloud: What i have found that works, is opening settings > mail, contacts, and calendars > tapping the email account you’d like to refresh > turn the calendar off > wait while it deletes it > turn the.