The biggest thing worrying users is that it requires a lot of storage space. iOS 8 powered just 7.3% of all iOS devices in the first 24 hours of launch which is a much slower adaption compared to 18.2% for iOS 7 last year.
Users have complained that the 1.1GB download requires well over 5.8GB of storage space
How can you free up sufficient space to install the iOS 8? Well, you have got two options. One, delete those blurred photos and videos you have watched or shift some of the important data to the cloud. Don’t worry, you’ll get a good deal of this storage space back once the installation is complete.
Check what apps are occupying the most storage space by tapping on Settings > General > Usage. You can delete TV shows or movies. Or simply the apps that take up too much space. Note that things you haven’t backed up will be deleted permanently. But the content you’ve purchased from iTunes can be downloaded again at any point, without having to pay again.
A good way is to back up your data, and then download and install the iOS 8. Once the new OS is installed, your storage will get back to normal, allowing you to restore your stuff.
You can also download iOS8 through iTunes.
Credit: Value Walk