We had a complete nightmare installing iOS 7 in 2013 - it took us all night. We had hoped things might go a bit smoother in 2014 with the launch of iOS 8. But unfortunately not. Again, many faced installation dramas because Apple's servers seemed unable to cope with the sheer number of people trying to access them to get the download. So if this was your experience with iOS 8 it's not a huge surprise, and you shouldn't feel like you're alone.
One thing is for sure: if you chose to update as soon as iOS 8 launched you were probably in for a long wait because the first few hours of an update are always the busiest time on Apple's servers. If you're like us you tried to update to iOS 8 pretty much as soon as it was launched, and probably found that it was going to take hours (ours said 14 hours). Perhaps you even saw error messages and warnings that the update had failed.
If you want to avoid having a long wait for the download, we recommend you wait for a day or two, both because the rush will have died down and because some initial bugs and problems that weren't noticed in the beta testing phase will have been patched.
All that presumes you had enough space on your iPhone to start with. The main issue encountered by those trying to update was the fact that the iOS 8 update requires a lot of space to be available on your iPad or iPhone. When we tried to update it said we needed 5.8GB of storage available, even though it claimed that the iOS 8 update itself is just 1.1GB. Why does it need so much space? This is because it downloads a compressed file, unpackages it and then installs it. You need the space for the unpacking and the update. It also needs enough space for iOS 8 itself.
If you don't need to free up a lot of space you may be happy to delete a few images from your Camera Roll or some of your music. You might find it useful to read ourguide to saving space on your iPhone here.
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