How do I make SPIN the default browser?

Symptom: 

Links from email/text try to open on a different browser which is blocked and while you get a prompt to "use SPIN," the link does not pass through causing frustration.

Solution:

Ensure that SPIN Safe Browser is the default browser. Go to Android Settings, search for "default" or "browser" and find the area (it's different on different Android versions) and set SPIN to be the default browser.