Will the Apple store be able to fix my iPhone?

The "other" space in my iPhone memory is taking up almost 2GB of my 8GB memory on my phone. Most of the suggestions online are just to restore the iPhone but I don't want to do that. If I take it to the store, will they be able to reduce the space the "other" is taking up, have you fixed yours a different way, or is restoring it the only option?
Thanks!

Added (1). The memory from my music, apps, etc.takes up less than 3 GB

That sounds rather odd. How much space does your other things take from the 8GB? (Music, Apps etc)

If you still have problems with it after reading the guides, I'd say try a restore, but make a safety copy of your iphone on iTunes. Sometimes the phone might be bugging up. My iPhone 5 did not like some of the apps I had and after a restore, it all worked like a charm.
Reason to restore it rather than repair? Well, a repair could take days/weeks and a restore takes less than 30 mins.

It's always worth a try to see if you can fi it yourself before taking it in for a repair and not having your phone for a week

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