The iPhone 1 (first generation) has the following size specifications:

• Height: 115 mm (4.53 inches)
• Width: 61 mm (2.40 inches)
• Depth: 11.6 mm (0.46 inches)

It has a 3.5-inch diagonal screen size with a resolution of 320 x 480 pixels and weighs about 4 ounces (113 grams).