Here's a quick concept I put together. I think a smartwatch can't simply double as another smartphone. Most things you do on your phone are very task oriented, so I would imagine a smartwatch to be about passive; things running in the background.
It would display time by default, with a sideswipe it unlocks
- Chat
- Siri (or voice to text equivalent)
- Share location
- Distance travelled today (just for fun)
- Friends nearby
- Settings
EDIT:
I did not design the watch itself, found it on some obscure luxury brand website and re-purposed it
