My last 2 purchases were unlocked phones, the last one the iPhone 6. I assumed, correctly or not, that an unlocked phone would work with any carrier. In any event, I never had a problem with a sim from a local carrier of the country I was in working. I live in the US. However, things seem to have changed. This was posted on this site yesterday... http://www.macrumors.com/2016/09/08/att-and-tmobile-iphone-7-models-lack-cdma/ "A customer that purchases an iPhone 7 from Apple's website and selects AT&T as their carrier, for example, would be unable to later use the smartphone on Verizon, Sprint, or any other CDMA network, even if the device is unlocked. By comparison, all iPhone 6sand iPhone 6s Plus models worked on both GSM and CDMA networks." "A customer that purchases an iPhone 7 from Apple's website and selects Verizon as their carrier, on the other hand, would also be able to use the smartphone on AT&T, T-Mobile, Sprint, or any other GSM or CDMA network." When I went to choose a phone online this morning (9/9), there was not even an option for unlocked. You need to pick a carrier first. Can someone shed some light on this? The way I read this is that to work with any carrier in the world, I need to go with a Verizon phone or any CDMA carrier. The rep at Apple that I spoke with yesterday didn't know. I seemed to know as much as him, which is scary.