Some update files have complicated formats or larger file sizes, allowing you to use more of your iPhone's internal capacity. If your smartphone still has a lot of space, this shouldn't be an issue. However, if you often download complicated programs and multimedia files, your available memory is likely insufficient. When this occurs, performance issues such as frequent crashes and sluggishness arise. This means you'll need to manage or free up some internal storage space on your phone. All unneeded stuff, such as outdated messages, programs, and files that are no longer helpful, can be deleted. There are a few more things you may do to free up memory space:

• Apps in the background should be removed. Applications that you've lately utilized but haven't closed are known as background apps. These apps are in standby mode, meaning they are operating in the background and using internal memory.
• Press the Home button twice rapidly on your iPhone 7 to delete background applications. This will provide a list of your most recently used apps. Then slide up to clear each app's preview.
• Delete any programs or data that you don't need. This is the ideal opportunity to get rid of any outdated or useless items. So start sifting through your iPhone messaging inbox, photo galleries, and other media folders to find and delete unneeded data.
• Tap and hold any app icon on the Home screen to uninstall unneeded applications. Tap the X in the area of the app you wish to delete or uninstall when the icons start to vibrate. Finally, press Delete to confirm your decision.

Do a soft reset or force restart one more time to make these adjustments and refresh your iPhone system.