CaptainBrowncoat
New member
An incoming call will suspend data flow, allowing you to receive the call, and at the end of that call data flow will resume. In the specific case of GPS/navigation, if your navigation app can locally store the map route information, the only thing you'll lose out on during the call will be 'active' information such as traffic rerouting should you miss a turn.
In which case you should pull over to finish the call before proceeding because you're not paying enough attention to drive safely anyway.