I have three older iphones currently on AT&T unlimited service, but am interested in switching to Boost Infinite. I bought an iPhone 15 using the Apple upgrade program last week, with the intent to switch the new phone to Boost this week. It seems that is perfectly doable with this particular phone. But the fine print implies that an eventual replacement phone from the upgrade program will still have be activated with one of the three current upgrade program carriers (AT&T, T-Mobile, Verizon). Is there any way to work around that? Or do I need to read and comprehend the deal details more closely next time?