We already know quite a bit about iOS 12 and what it will add to the iPhone when it lands. We know that iOS will feature a restricted USB mode that will make it much harder for authorities to crack the iPhone in an investigation. We also know that iOS 12 will bring Live Listen to the AirPods wireless earphones to help those with hearing difficulties

Source: Hot Hardware – When And How To Download Apple iOS 12 To Help Make Your Old iPhone Fast Again