iPhone is slowing down or facing intermittent issues, you might want to try clearing cache to fix it. There is no such thing as a system-level cache cleaner on iOS, so you can’t really clear cache on your iPhone in one shot. What you can do is clear the cache individually from various apps, if they support that feature. To clear the cache on the iPhone, we’ll take a three-pronged approach.
To clear cache completely, go to Settings > Safari and tap Clear History and Website Data. Once again, tap Clear History and Website Data. If you are having an issue with a particular website, go to Settings > Safari > Advanced > Website Data. Now use the search bar at the top to find the website you’re looking for. When you find it, swipe left and tap Delete to clear cache for that particular website.