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When looking at these icons from your friends list, these sybols will appear grey.
Previously, you could tap the messenger icon, tap a conversation, and it appears as a chat head.
If you prefer to leave chat available for only a select few friends, click the gear icon and select "Advanced Settings" instead, then select "Turn On Chat for Only Some Friends" and enter the names of friends for whom you'd like to allow chat.
If you are not in the habit of force-stopping your Facebook App, it remains active in the background most of the time.
Previously, you could tap the messenger icon, tap a conversation, and it appears as a chat head.
If you prefer to leave chat available for only a select few friends, click the gear icon and select "Advanced Settings" instead, then select "Turn On Chat for Only Some Friends" and enter the names of friends for whom you'd like to allow chat.
If you are not in the habit of force-stopping your Facebook App, it remains active in the background most of the time.