Blending Options>Gradient Overlay
Blending Options>Stroke
Gradient's parameters:
Make a copy of the recently created layer and then select as usually Free Transform solution for placing the copy the same way demonstrated below:
Make two more copies of the layer containing the button's colored representation. Choose again the Free Transform option to situate the copies on the same position as below, changing the parameters for the copied layers:
The parameters for the green button: Blending Options>Gradient Overlay (the rest of the layer's parameters should remain the same)
Gradient's parameters:
The parameters for the red button: Blending Options>Gradient Overlay (the other parameters should be left the way they are)
Gradient's parameters:
Using the Rounded Rectangle Tool (U) (radius of 15 px), it's possible to represent the protuberances reserved for the loud speakers. Then press Alt button while applying the Rectangle Tool (U) to erase the unnecessary elements.
The layer's parameters: Blending Options>Gradient Overlay
Gradient's parameters:
It's time to draw the openings on the loud speaker, choosing the same tools and methods we've described already when drawing the opening.
The layer's parameters: Blending Options>Gradient Overlay
Gradient's parameters:
Make a copy of the recently created layer and choose the Free Transform option to place the copy as it is shown below:
Now we shall represent the panel of the buttons containing the ciphers of the cell phone. In this case it's necessary to use the Rounded Rectangle Tool (U) (radius of 55 px). Using the Add Anchior Point Tool, we should insert a top on the bottom. Select again the Convert Point Tool to make the corrections on the elements' shapes. This new layer should be situated under all the previous made layers of the cell phone.
The layer's parameters: Blending Options>Inner Shadow
Blending Options>Gradient Overlay
Gradient's parameters:
Make a copy of the recently made layer and then select again Free Transform solution to make the copy smaller, changing the layer's color on the white one, moving off the effects. This layer should be placed above the previous one, but under the others.
Make one more copy of the made layer and select once again the Free Transform option to minimize the copy a little.
The layer's parameters: Blending Options>Gradient Overlay
Gradient's parameters:
Make a copy of the earlier made white layer and choose the Free Transform option to make the copy smaller, placing it above the rest of the layers.
Make one more copy of the previous layer and then choose the Free Transform solution to make the copy smaller, placing it the same way indicated below:
The layer's parameters: Blending Options>Gradient Overlay
Gradient's parameters:
Mark out the zone containing the buttons with the ciphers, applying the Rounded Rectangle Tool (U) (radius of 15 px). Insert by one top on the upper and on the bottom sides, choosing the Add Anchior Point Tool. The Convert Point Tool is helpful for making the appropriate corrections on the new elements' shapes.
The layer's parameters: Fill 0%
Blending Options>Stroke
More Tutorials: 
