Try this:
1. mute your navigation voice (no prompting).
2. observe when you receive an SMS (or prepare to send one from another device).
3. if the SMS is received at the same time as a navigation prompt ("take exit ahead on left"), the prompt will unmute and the SMS will not be read.
1. mute your navigation voice (no prompting).
2. observe when you receive an SMS (or prepare to send one from another device).
3. if the SMS is received at the same time as a navigation prompt ("take exit ahead on left"), the prompt will unmute and the SMS will not be read.