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I think is good to be a fresh install maybe cuz for bugs,logs n e.t.c, dunno.
You can certainly do it if you want, but it's not really something that's necessary (unless perhaps you are running into issues that are beyond some typical ones).
 
From what we can read here from everyone, most bugs seem to be coming from the software so resetting your phone might not bring as many fixes as expected. Just be aware of it. You might end up being disappointed.
 
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