iOS10 keeps reducing storage space, what’s going on?

If the storage space is full, then of course it will prompt that there is insufficient storage space. Method: 1. Delete recordings. iOS voice memos definitely take up a lot of memory. You can delete unused memos or just delete some unused ones. 2. Deleted browser cache: In "Settings" - "Safari" - "Clear History and Website Data" button, you can clear Safari's cache. Users who use Chrome can click the "three" in the upper right corner to enter the settings. In the "Privacy Settings", you can clear browsing history, cache, cookies, or clear them all. The steps to clear other third-party browsers are roughly the same. 3. Deleted old text messages: When sending a text message with a picture, the picture will be stored in "Others". Deleting them will also help free up memory. Unfortunately there is no easy way to mass-delete text messages, and when deleting manually, be careful not to delete records of important conversations. 4. Photo album in mobile phone There are many photos in mobile phone that can be imported to computer or backed up to the cloud. In this way, clearing some photos can also free up a lot of space. 5. Movies or videos on your phone: This takes up the most space and memory. You can delete videos or movies on your phone to make your phone have more space. 6. Restore the factory settings of the phone. This is to re-flash the phone. This method is not recommended.