On Secure Phones and devices running Android 5.1.1 and below:
- Open Settings. Under Device, tap Apps.
- Tap Secure Chat to open the App info.
- Tap Clear Cache.
On devices running Android 6.0 and above:
- Open Settings. Under Applications, tap Application Manager.
- In the Application Manager, tap Secure Chat to display App Info.
- Tap Storage.
- Tap CLEAR CACHE.