This has nothing to do with "running afoul of Apple's privacy rules". Apple has effectively killed the IDFA, so even if T-Mo built a profile of an iOS user, th

This has nothing to do with "running afoul of Apple's privacy rules". Apple has effectively killed the IDFA, so even if T-Mo built a profile of an iOS user, there's no "key" to be used later on to identify the user when they try to show an ad based on the data collected.