I suspect I would get greater value by simply duct-taping two iPhones together into a fold.
The two batteries inside the Duo will allow longer usage.
from the Duo page:
- Up to 31 hours video playback when using the inner display
- Up to 44 hours video playback when using the outer display
alt Hacker News
The two batteries inside the Duo will allow longer usage.
from the Duo page:
- Up to 31 hours video playback when using the inner display
- Up to 44 hours video playback when using the outer display