Once the display is expanded to the sides, users will also get the benefit of having larger input interface
Apple's U.S. Patent No. 8,723,824 has been granted by the U.S. Patent and Trademark Office for "Electronic devices with sidewall displays" which is a special method of positioning OLED or other flexible display type around the sidewalls of a portable device. However this is not the first time that such a wrap-around display patent is coming out of Apple but the last of the designs were less ambitious than previous designs and hence they might be re implemented in the future smartphones.
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This new invention is going to consist of one or more flexible display layers disposed beneath a clear plastic or glass housing and the patent allows for at least one sidewall to be fitted with an edge display that is an extension of the main front-facing touchscreen. These side displays are going to have interactive or touch sensitive portions which are going to be left uncovered so they can be visible to the users. The non functional parts will most likely be covered with paint. The sidewall display and associated touch sensitive regions will be accessible from the openings in the sidewall which will serve the purpose of windows.
Once the display is expanded to the sides, users will also get the benefit of having larger input interface which is going to leave plenty of space on the main screen. This extra display space can also be used to show a variety of interactive virtual controls and features which could not have been shown with regular physical buttons.