Once you are in Groups, just tap and hold your finger and drag the page down as you did for Calendars. Launch the app and select “Groups” on the All Contacts page. The activity icon will spin briefly, and you should find iCloud has synced your calendars for you. When you get to the next page just tap and hold your finger on the screen and drag the list down until the activity icon appears and release the page. To refresh your iCloud Calendars, launch the app on your iOS device and tap the “Calendars” button at the bottom of the page.

Once you know your system(s) are set up correctly, you can use this simple trick to force iCloud Contacts and Calendars to sync: Mac: System Preferences>iCloud>ensure all the iCloud services you want to sync are checked. IOS: Settings>Apple ID>iCloud>iCloud Drive.

You must ensure these are configured to set time and date automatically and have iCloud Drive/Documents & Data enabled. Next, check all the devices that should be syncing. (You can do quite a lot of useful things through iCloud’s online service). Are all the devices you want to sync included on the list? If not, it is possible they are not using the same Apple ID. In the next window, you should see your storage space status and a row called My Devices. Go to, login with your Apple ID and then tap iCloud Settings (either the gear-shaped box icon or by selecting it in the drop-down menu underneath your name at the top right of the iCloud browser window). Step two is to ensure you are logged into iCloud using the same Apple ID on all your devices. One of the first things to do is check Apple's system status page for any outages.

Subway surfers icloud sync