There comes a time when phones get so stuffed with crap we really should figure out to cut down on things that fill up and use memory. Often it seems full to the top. The updates are going on for hours, moving around the navigation of the phone is slow and clunky.
You may have an android or some sort of Google phone with App Store stored on your phone. A cache cleaner is good but in the case of updating software is not enough. You manually forge habits of cutting down on the mustard by deleting also the usage, forcing stops rather than uninstalling completely.
These are just some of the things that happen. Forging manual habits and aquainting yourself with the mechanisms involved in owning the mobile you have is good stuff.
CCleaner Crap Cleaner is a cache cleaner that saves you half a job. It also helps easily locate PDF$ photos and videos. When you plugin in phone to computer best to take nice photos and videos of phone onto phone for future reference. This will make a smoother operating system for your mobile phone to work with. I hope this helps, if you are still struggling ask someone to help you. Most people in the technology world are really helpful like that.