Apple is scheduled to introduce in its next major iOS release (after iOS 10 anticipated September 2017), a significant change that removes APIs that are required for handling calls and IM’s when the application is running in the background. What this means is that if Jabber is not opened in the foreground, the user will not be notified of incoming calls and IM messages.
Your company is a Cisco Unified Communications environment and you have integrated Jabber for your internal Instant Messaging and Presence needs (IM&P). Someone at your company is trying to get in touch with you, but your Jabber status show as " Offline" even though you are logged in. How can I identify the source of the problem? What can I do to fix this issue?
This issue is usually a scattered occurrence and one that not everyone is able to observe, making troubleshooting a challenge.
Jabber status shows as "Offline" to others, even though you are logged in.