Mobile Contacts Sync

Turn Entra ID users into real phone contacts

If employees cannot see colleague names in iPhone or Android dialers, the missing piece is contact materialization. CYNC bridges Microsoft 365 directory data into mailbox contacts that mobile devices can actually use.

What changes after rollout

  • Caller ID with employee names instead of unknown numbers
  • Name resolution in native dialers and messaging apps
  • Consistent contact cards across corporate devices
  • Automatic updates when users change name, title, or number

How the sync path works

  1. 1. Read from Entra ID. CYNC fetches users with Microsoft Graph.
  2. 2. Write to mailbox contacts. Contacts are created or updated per target mailbox.
  3. 3. Device sync. Outlook/mobile account sync exposes those contacts to supported phone contact surfaces.
See full setup flow

Deployment pattern for IT teams

Pilot group

Start with a subset of users and verify contact behavior on iOS and Android devices.

Policy alignment

Align Outlook contact sync policy with your mobile management standards.

Full rollout

Expand target mailboxes and monitor sync state from the admin dashboard.

Entra ID phone contact FAQ

Why are Entra ID users not visible in the native phone contacts app?

Microsoft 365 directory entries are searchable in Outlook, but they are not automatically created as native contacts in iOS or Android dialers.

How does CYNC solve this?

CYNC reads users from Entra ID and writes them as real Exchange mailbox contacts. Those contacts then sync to devices via Outlook contact sync features.

Do we need to install anything on each phone?

No per-device CYNC install is needed. CYNC runs centrally as a Windows Service; users receive synced contacts through their mailbox account setup.

Can we limit who receives synced contacts?

Yes. You can target specific mailboxes and control the synced source scope through configuration and Entra group-based filtering.

Ready to improve mobile caller ID across your org?

Start free for up to 10 users, then scale when rollout is complete.

Download CYNCView pricing