To be honest, when you buy a phone this expensive and more, there should not have to be a need for 3rd party apps. As far as your policy is concerned, I will just get another phone and new number and just put this away to meet your so called outrages policy then sell it.
Due to misinformation, Boost cost me roughly $200 for taking back a new Samsung 9+ ( activation and simm card fee's) and my current S10e and trying Verizon and AT&T. I would have been better sticking with one of those two instead of not being informed about there lock policy. As soon as I get this done, I will help my best friend get away from them as well. When you belong to organizations (American Legion, Moose and VFW) such as I do, word of mouth is a powerful thing.