Silicon Valley:-

The latest software update for iPhone 6 handsets is allegedly rendering the devices useless if it detects repairs not carried out by Apple. The problem is known as ‘error 53’ and has appeared in Apple products before. The Guardian reports that users’ phones were disabled after the Touch ID home button was repaired by a non-Apple engineer. The issue appears to arise once devices have been updated to the latest operating system, iOS 9.–BBC