Consider the following scenario:
You deploy the mobility feature in a Microsoft Lync Server 2013 environment.
You configure multiple users in the environment, such as user A and user B. The telephone numbers of user A, such as mobile and work numbers, are stored in Active Directory Domain Services (AD DS).
User B signs in to a Lync mobile client in the environment.
User B searches user A, and user B opens the contact card of user A.
Note User B does not select Friends and Family as the privacy relationship for user A.
In this scenario, except the work number, all telephone numbers of user A that are stored in AD DS are missing in the contact card. For example, the mobile number of user A may be missing.
This issue occurs because Unified Communications Web API (UCWA) does not send the telephone numbers to a Lync mobile client based on the privacy relationship configuration. Therefore, UCWA only sends the work number.
To resolve this issue, install the following cumulative update:
2937297 August 2014 Cumulative Update 5.0.8308.738 for Lync Server 2013, web components server