User interfaces for single-handed mobile device control

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for presenting, while an apparatus is in a first apparatus orientation, a plurality of icons in a first configuration on a display of the apparatus. In some aspects, the first configuration may correspond to a first icon arrangement. Some disclosed methods involve presenting, associated with a custom event, the plurality of icons in a second configuration on the display while the apparatus remains substantially in the first apparatus orientation. The second configuration may correspond to a second icon arrangement wherein a first position of at least one icon in the first configuration is different from a second position of the at least one icon in the second configuration.