How to install Carplay & Android-auto for Mercedes with 12.3 inch HD Touchscreen?

★This is a video showing a radio upgrade to my Mercedes. Simple step by step guide showing how to remove your factory fitted radio and install a multifunctional new one without any damage to the car.
★With built-in DSP sound effect, the resolution of radio is 1920*720 for 12.3 inch, shows the most exquisite picture. Built-in Bluetooth module, giving you ability to stream Bluetooth music and make hands-free calls,keeping fun and safe.