On iOS please add shortcuts or a haptic touch menu for the app icon. There are too many steps involved to take a quick note about someone. E.g. when I just learned something important about someone during a conversation, I want to get to the entry by just one tap.

Show a screen/section that shows newly created phone contacts that haven't yet been added to Dex

In the mobile app, so you can easily see new contacts (added automatically via new LinkedIn connections) on either Home or Contacts tab.

Please show this number of contacts somewhere on the contacts page.

Show all the call logs and sms sent/received to/from a particular contact

Be able to leave voices notes for a user.

I'd like to be able to sort/add my contacts in groups, the same way as the keep in touch page.

Show all the interaction of whatsapp and other messaging apps. Accordingly, update the last interaction. "AmoCRM" is a great example that you can look into.

Act as a caller id when receive a call from unknown number. An action bar after the call completed to "Add contacts" similarly "Log Call", "Add Interaction" in case of known contacts