hey i have cricket SE A1662 it says itll work with ATT/t-mobile-verizon....my question is if my phone unlock will VoLTE and wifi calling work if i get t-mobile/metro pcs service? and if i get he sprints A1723 and get it unlock will i be able to use VoLTE and wifi calling with t-mobile/metro pcs service?

why im asking is i would like to try out sprints LTE in my area since its been years since i had them...and if i happen not to like the service id like to go back with t-mobile/metro pcs..the iphone i have now doesnt have all of sprints LTE bands and of course sprints iPhone supports both t-mobile and sprint LTE bands

hope this is the right place to post, did know where to put this?