There are 2 ways to do this on iPhones. You can either Clear Temporary Data or Offload app data.
Follow the steps below to offload an app on your iPhone. This will free up storage used by the App but keep its data. If you have to reinstall the app, the data will have been saved.
Step 1: Open your device Settings, and then select General.
Step 2: Go to iPhone Storage.
Step 3: Scroll down and locate the app you want to offload and select Offload
When it comes to clearing app cache data, some iOS versions do not have this option. If yours does, you'll see an option that read Clear Data at Next Start when you navigate to the app page in settings.
Step 2: Clear Cache and Data from Google Play Store.
Step 3: Clear the cache and data from the Google Play Services.
The update can take up to 48 hours.
For more advice from Google on this process, click here.
Step 2: Search for the app you want to clear the cache of or find it in the list by tapping Apps in the menu.
Step 3: Tap Clear Cache and Clear Data at the bottom of the screen.
Again, as versions of the Android operating system differ, bear in mind the steps you need may be similar to this, but not identical.
Step 2: Select 'Clear Browsing Data' from the list. This will open a new tab.
Step 1: Navigate to the top menu bar containing "file, edit" etc and click the WORD Safari.