Use these steps to use/do/support uninstall and clear cache for apps on the Apple iPhone 4S.
Clear app cache and data
Clearing cache or data from an app can fix some software problems. If you clear data, any data stored in that app is lost, such as settings, login information, and saved games. If you don't want to clear the data, try just clearing cache first. If you still experience problems, then clear data too.
To clear the cache and data for an app, you must uninstall the application.
- On the Home screen, tap and hold on any icon.
- When the icons start to wiggle, tap the X in the corner of the application you wish to uninstall.
- Tap Delete.