8GB iPhone strorage almost used up when I've only used 4.8GB?

My phone is 8GB storage and I have only used 4.8GB and only have like 500MB left… Why is this and how can I change this?

500 MB equates to 3.2 GB

It does have 8gbs of storage but Apple usually uses about 1~3 gbs of that storage for the iOS, update, apple apps, messages, safari info, etc.

Try buying more iCloud storage

The operating system uses up that storage as well, if you have an 8gb iPhone then you will have around 6-7gb or usable storage with iOS 9 and a low 3-4gb storage if you have iOS 8 installed.

1st off 8GB is not much to begin with particularly when they are calling for people to stop offering 16GB phones.

2ndly you don't get all 8GB to use, so that could be part of the explanation there & then cache memory from the rest of the apps being used

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