When you use the Microsoft Skype for Business mobile applications to search a contact, you may find the contact details like person's name, phone number, and so on, cannot be shown in the search result. This issue occurs when the contact SIP address's domain isn't your Skype for Business Server 2015 Active Directory domain. For example, your Skype for Business Server domain is contoso.com, the affected contact's SIP address is user@company.com.
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