in whatsapp, how do you display contacts in alphabetical order? I  used to be able to get whatsapp to show contacts in alphabetical order but now the option has gone. I can't see all my contacts listed from a-z.  It shows them in order of the last message between us.  

How can I display whatsapp contacts  in alphabetical order?

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The screenshot on the right, is showing you your active chats. This goes by the order of the last message you received.

To view all your WhatsApp contacts in an alphabetical order, click on the green circle on the bottom right of the screen. This will bring up a list of all your contacts that use WhatsApp.