Originally Posted by
Habib Saufi I believe in Application Manager, you can open the storage tab, where you will find the list of application installed in your bb10 device.
Tap the application, and it will open the page where you can look the detail for that apps, how much power it uses, how much data it uses. There reside a button to delete data. But be carefull, game with saved progress will be losing the progress when it's data deleted, the same goes to apps with account, such as Instagram, Twitter, you will have to log in back after deleting the data. But at least, something was cleared.
i've been doing this quiet long to maintain my Z10 speed and it still doing great so far.
BlackBerry Z10/STL-001/Bb10.4.1.1143