A combination electronic device is formed from a first device, such as a tablet, and a second device, such as a mobile phone, wherein the display screens of each are combined to display a single integrated image. The first device includes a first display screen having a slot extending from one of its sides that defines a gap in an image displayed by the first display screen. The second device includes a second display screen that is complementary in shape to the gap in the first display screen. A holding mechanism detachably holds the second device such that the second display screen fills the gap of the first display screen of the first device and completes the visual image displayed by the first display screen. A data connection conducts visual display data between the first and second devices such that an image displayed on the second display screen of the second device completes an image displayed on the first display screen of the first device.