The U.S. Patent and Trademark Office on Tuesday issued Apple a patent, allowing to change volume in iPhones and switch between the device’s multiple speakers, detecting how near or far you are to it.
Apple’s U.S. Patent No. 8,452,020 for “Adjustment of acoustic properties based on proximity detection,” a patent application, which describes how the iPhone’s promixity sensor could be used to automatically increase or decrease the volume or even switch between the receiver and the speaker.
According to the patent, while holding the iPhone to the ear the volume would be lower through the receiver. But as you would put it away from your ear the volume would raise.
Laying the device down and moving away would switch the audio output to the speaker.
That means, that the proximity sensor will note the change and switch to “speaker mode.”










The patent covers the use of a multi-touch interface and of various modules and programs, such as email, camera, video player, calendar, widgets, search, notes, maps and others and a virtual keyboard respectively. This patent is closely related to 