Why FB direct message and camera button has different location between ios and android?

Android: DM is upper iOS: Camera is upper

Anyone knows why is the button is location switching?

enter image description here

closed as primarily opinion-based by Joel Tebbett, Andrew Martin, Shreyas Tripathy, Midas, Matt Obee Oct 10 '17 at 11:37

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    Unfortunately, unless there are any Facebook employees on this board, you are only likely to get opinions rather than facts for this question. We can hazard a guess that Facebook has studied the different use habits for users on the platforms and adapted accordingly but, ultimately, we'll never really know for sure without information directly from Facebook. – Andrew Martin Oct 10 '17 at 7:01
  • To clarify, those are not direct messages. That's direct photo/video – Armands Oct 10 '17 at 14:39

Nobody can really tell unless they're working for Facebook specifically on that team, but for me, it looks like a classic case of “it depends in which A/B testing bucket you've landed” unless it's consistent across different Android and iOS devices.

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