shahulhizam Said:
"My System Storage is 48 GB it is Keeps on increasing"
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Thank you for the screenshot.
Ridding of "System Data" (Formerly Called "Other"):
It basically contains unnecessary files such as caches that are used for system ease of use - all of which gather over time: How to Clear "Other" in your iPhone's Storage - Use Backup - User Tip. Caches would be being used for remembrance of application use.