If smartphones could emit UV light strong enough, don't you think you would be still here and reading this? Even if it only use visible light to cure, I highly doubt the light brightness is strong enough to cure the resin. That would clearly imply only a few selected smartphones will be compatible with this OLO.
On top of that, their resin bottle are not opaque, which allows light goes through. It doesn't make sense at all for storage.

Their timeline is unrealistic, now they bust 10 time their initial goal. This is highly another makibox,cobblebot failure.