Outlook Contact Sync
Outlook contacts sync is based on settings>accounts>Outlook>sync and one button is given in Outlook App settings for sync of contacts to be enabled. this is a very unstable functionality. Observed every time my phone is discharged and switched on back after recharging this sync button is switched off. Due to this have to constantly keep checking it back and make this button to sync position every time my phone recovers from a battery drain.
This features is very stable on my iOS phone.
Please make this feature to sync contacts at office level and make it stable in Android.