I'm curious because my boyfriend has switched over from boost to tmobile because I switched to tmobile not too long ago. I have seen that the new walmart plan is powered by tmobile, but I have to know if he could still talk to me for free when using his tmobile phone, since he is not going to be on the walmart plan with me. If someone who knows about this from experience about this or has a website where it states the answer to my question so I could see it to make sure, I would GREATLY appreciate it.