BMW Android Navi GPS screen NO Sound Without Audio Fixed

Installation tutorial guide for BMW Android Navigation GPS screen NO Sound/ Without Audio Fixed, Buy products from our website: https://hifimaxnavi.com

This video offer checklist to check NO Sound problem, check step by step;
If you follow our install manual, normally without this problem. If you ask other people or tuning shop to install it for you, you should provide the install manual to them. Thanks.