On your Android smartphone Lollipop many data sher synchronized when the device via Wi-Fi or mobile data connection is connected to the Internet. This includes, for example, synchronizing e-mails, contacts, WhatsApp messages Samsung account and many more.
Now it may be that all of a sudden in your Android smartphone Lollipop these data are not properly synchronized. if that's the case, then please check whether you have activated in the master Android Lollipop synchronization. This can look as follows:
The Master Synchronization in Android Lollipop can be easily activated as follows, so that all accounts receive the synchronization again.
Pulls to with two fingers the status bar from top to bottom in the screen. So you see all the quick selection fields of the Android system Lollipop. One of them reads: "SYNC"
Android Lollipop Master Synchronization
This is the master synchronization in Android Lollipop. Typing on this, so that you marked as green and thus becomes active. (See Image)
You have now successfully completed the Master synchronization for your Android smartphone Lollipop reactivated. All apps that need to be synchronized, should again function properly.