The causes of plantar fasciitis are not entirely clear. Risk factors include overuse such as from long periods of standing, an increase in exercise, and obesity. It is also associated with inward rolling of the foot and a lifestyle that involves little exercise.
The Samsung Galaxy S4 is an Android smartphone produced by Samsung Electronics and was first shown publicly on March 14, 2013 at Samsung Mobile Unpacked in New York City.
Most of Samsung's devices, including its flagship Galaxy S smartphones, currently use a skinned version of the Android operating system. This means the software runs on Android, bu t Samsung adds its o wn design, menus and tools for use on its own devices.irm creates world's first smartphone to run Tizen operating system. 1  Samsung has unveiled a smartphone running the Linux-based software. 2  The Samsung Z runs Tizen and will go on sale in Russia later this year.