After installing the update iOS 7.1.2, some users have found the failure of contacts. Entries disappear from the device or synced through iCloud. As a result, added to the iPhone contacts do not appear on the Mac and iPad and vice versa. Solve the problem is very simple.
Some users believe that a bug with synchronization of contacts associated with malfunction in iCloud iOS 7.1.2. In fact, this is only a problem with the settings. If the contacts are not synchronized, you must re-activate the synchronization mode.
How to restore contacts synchronization via iCloud in iOS 7.1.2:
Step 1: Open the Settings application on the iPhone, iPad or iPod touch.
Step 2: Go to Mail, addresses and calendars.
Step 3: In the Contacts section, make sure that the default account iCloud.
Step 4: The problem is that even after missing contacts do not appear on other iDevices.They have to be entered manually. To find out what customers not in iCloud, open the phone application and go to Contacts -> Groups.
Step 6: Remove the tick points All iCloud, leaving only the group "On my iPhone». So you will see a list of contacts missing on your other devices.