[Stwutter]

I have the S7 Edge. I do have a lot of apps - about 150 - and after a factory restore, the internal storage that's used is about 13.5gb.

I'm a bit of an obsessive about storage, battery and the like, so, every day, I clear the cache, but only in settings but via file manner (Twitter, for example, can have a couple of hundred MB cache data if I'm on it loads). Despite this, the internal usage gradually creeps up. Yesterday, pre-reset, the internal usage was nearly 21gb. That's about 3 months since the last factory restore.

It's not a big deal, but, theoretically, the phone internal storage would be full of it was just left. Is a factory restore the only answer?