Shrink Phone by Jeong chan Moon from korea

[Background]
When we don't hold our phone or go to the area where roaming service is not offered, our communication with our family and friends or travel partners is not free.
For this reason, disposable cell phones' interest and demands are increased. However existing disposable cell phones used only when
they are electrified as prepay of time on phone and they have high anxiety of environmental pollution when they are disused.

[Concept]
As phone's volume is decreased in proportion to
time on phone and battery consumption, we can
sure phone's remaining usage by the sense of sight and touch.