The speak button on steering wheel (face symbol) have no connection to the joystick (under the wiper stick).
This speak button is connected to to a Control Unit with CAN Bus and over CAN bus to the original radio....
After market radios can not use the speak button.
Steering wheel converters convert only the resistiv joystick buttons for a after market radio and read the CAN Bus for using ignition, light, backwards drive....
I made a DIY steering wheel converter to use the joystick buttons on a china radio with KEY1 and KEY2 inputs and use the steering wheel learning function.
The DIY version only cost's 2€
amazon.CN problem - change in the main settings the location to germany
or the Alexa App is preinstalled - deinstall it and download the Alexa App with your local google account