Many of the device performance related issues occur due to either some software getting corrupt or due to inappropriate software installed in the device. Such problems are addressed by thorough diagnosis and by restoring the software based on the diagnostics test. Also, such Software Restoration is a paid service offered by Apple Authorized Service Providers.
At Arab Computers, our Apple Certified Technicians are well trained to diagnose software issues and help customers with restoration services to make your Apple device function as per the specifications.