In the Layers panel, double-click the name of the Desktop Copy duplicate artboard, and
name it iPhone.
In the Properties panel, click the Set Artboard to Preset menu, and choose iPhone 6. That
artboard preset applies the pixel dimensions of an iPhone 6, iPhone 7, and iPhone 8 (750
pixels wide by 1334 pixels tall). Now you can develop a design for that iPhone size, using
the elements of the Desktop design. It will also be easier to maintain design consistency,
since both the desktop and mobile designs are in the same document.
Save your work.
Tip
You can choose artboard presets from the Size menu in the options bar when the