Android error: app not installed - you can do that

The "App not installed" message appears on Android if an error occurs while installing an app. We will show you which measures you can take to remedy the error.

App not installed: Check internet connection

• If the inter-connection is interrupted during the download process, the app cannot be downloaded.
• Check your internet connection. If you use a WLAN connection, you may have WLAN access, but still no Internet access.
• If you have established a working internet connection, start the installation again.

Installation error: Insufficient space

• You may not have enough free space on your device.
• We'll show you what you can do if you run out of space on your Android smartphone.
• When you have cleared enough memory, start the installation again.

Android apps: Allow unknown sources

• If you try to install an app via the APK instead of the Google Play Store, you must activate the "Allow unknown sources" option.
• We'll show you how to allow unknown sources in Android.
• Then start the installation again.

Fix Google Play Store issues

• There may have been an error in the Play Store app.
• First, try restarting the installation from the Play Store.
• If that doesn't work, clear the cache of the Play Store app.
• Then try again to install the respective app.

Restart or reset smartphone

• Try restarting to fix the problem. Turn off your smartphone and wait two minutes before turning it on again.
• If the problem cannot be resolved, you may need to reset your device to the factory settings.