While trying to install the NAVIGON app, you receive the error message that there is not enough memory. The NAVIGON app requires about 1,1 to 2,5 GB free memory for the installation alone. The exact size required is dependent on the number of countries you wish to install. 

If the memory on your mobile device is insufficient, please remove any unused apps of the mobile device or unnecessary countries via the MapManager in the NAVIGON app.