March 6th, 2018 
Marty Figgs 
Facebook is well known for being a rather liberal user of A/B testing, having seemingly hundreds of tests going on at any one time across its increasingly diversified product line. We’ve come across a new one, courtesy of Google+ user Fedor von Bock, which sees Facebook testing out a navigation bar at the bottom.
Even though the screenshot below has a bottom navigation bar, it is obviously apparent that the main tab bar at the top remains.
Facebook testing a bottom navigation bar in its app was written by the awesome team at Android Police.
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