The best thing for you to do is to switch to the TMobile One or One Plus Plan. We had MetroPCS which did not have International Roaming and then switched to TMobile Simple Choice then upgraded o the Simple Choice North America Plan.

Then I called loyalty team and got the TMobile One Unlimited for $5 more minus Netflix. So for $145 for 4 lines all taxes and fees included we are happy.

Also what they don't tell you is that Metro PCS is deprioritized over TMobile. I highly recommend post-paid as this is the only way to get the International Roaming with Good Credit. At least this is how it worked when we switched to TMobile.

Its best to be on the true TMobile over MetroPCS even if the two companies are connected there are differences.