The present invention discloses a multi-state detachable smartphone-tablet hybrid mobile device comprising a number of display parts connected to each other. By opening one or some of the displays, more screen space becomes available, and the smartphone is therefore converted and expanded to the tablet device. With folding the displays back, the device becomes a smartphone again. The display parts connected with the special design hinge mechanism enabling opening of up to 360 degrees due to the special hinge mechanism. The invention further includes a detachable display parts feature, transforming the device to a number of single-display smartphone devices.The device may further comprise a number of photovoltaic cells covering sufficient portion of each display part. Such a large number of photovoltaic cells will aim to produce enough energy to make it a completely self-charging device.