The app cache on the LG smartphone serves as a cache to speed up operations. Data such as pictures, videos, documents or even temporary settings are stored in the app cache. This data does not have to be loaded the next time the app is run and is available smot faster.

But a full app cache also has the disadvantage of slowing down over time or storing erroneous information, so if an app becomes slow or errors occur, it's worth clearing the app cache on the LG device.

Android 9 | LG UX 9.0
Step 1:  Open the  Settings
Step 2:  Tap on  General
Step 3:  Tap on  Apps & notifications
Step 4:  Tap on  App info
Step 5:  Tap on desired  App
Step 6:  Tap on  Storage
Step 7:  Tap on  Clear cache
  1. Open the Settings
  2. Tap on General
  3. Tap on Apps & notifications
  4. Tap on App info
  5. Tap on desired App
  6. Tap on Storage
  7. Tap on Clear cache

LG Instructions