Check storage for current free space
You can check the free space of your current smartphone with 'Storage' in the Xperia setting. First, let's look for the reason why the movement of the smartphone is slow.
Open 'Settings' and tap 'Storage'. The capacity currently in use and its breakdown are displayed.▲Tap 'Storage' in 'Settings'. 22%, or 14.30 GB, was reported as in use. From the center of the screen down, you can see which categories are taking up how much space.
Delete unused apps
If you can see how much space your phone is using for what, you can move on to increase the capacity.
Tap the 'Increase the amount of free space' button on the 'Storage' screen to display 'Select items to delete'.
You'll see a list of apps that you rarely use or haven't used in the past year, so tap to check and delete the ones you don't want.▲Tap 'Increase the amount of free space' in 'Storage'. The 'Select items to delete' screen shows things like 'Rarely used apps' and apps you haven't used in a year. Tap the app you don't want, and put a checkmark on it. Tap "Free 235 MB"
If you check the apps you want to delete, you can check the amount of free space you have deleted by clicking "Free 235 MB" in the lower right corner.
Always turn on Smart Cleaner
In addition to selecting the application you want to delete and securing the storage capacity, there is the 'Smart cleaner' feature which automatically deletes the cache.
You can set it up with one tap, so if it's off, turn it on.
Open 'Settings' and tap 'Xperia Assistant'. Tap 'smart cleaner' and tap 'ON'.▲Settings > Xperia Assistant > Smart cleaner, Tap 'ON'
There are seven models with smart cleaners: Xperia XZ1, Xperia XZ1 Compact, Xperia XZ Premium, Xperia XZs, Xperia XZ, Xperia X Compact, and Xperia X Performance.
This article is based on the Japanese version of Engadget and was created by machine translation. The Japanese edition of Engadget does not guarantee the accuracy or reliability of this article.