Android phones and how they switch from mobile data and wifi automatically : <p>How do phones choose which to prioritize when wifi and mobile data are on? Would love to know what governs the decision on this like the code or the drivers on the android phone. </p>

<p>Currently working on a project focused on building an app capable of failing over from a WiFi connection to a different line like SMS network if the internet line goes down. Looking to help disaster management institutions with the resiliency of their communication.</p>
