Grandfathered Unlimited Data Plan - Switching devices from Android to Apple
I'm currently on one of the grandfathered unlimited data plans. In the past (after they discontinued the unlimited data plans), I have been told that if I were to switch over from my Android device to an Apple device that I would lose my unlimited data plan and would need to select one of the current plans available. Something about how the phone services (imessage, icloud, etc) were set up in the back end.
I recently spoke with an AT&T customer service rep and inquired about some of the new unlimited data plans to see if it was cheaper for me to switch over (it was not). One of the reps told me that even on my current grandfathered plan that I'd be able to switch to an Apple device without having to change my current plan but when I went into an actual AT&T store, one of the reps said that I wouldn't be able to do that. Now I'm kind of confused on who to trust here.
Can anyone confirm that I'd be able to switch devices and have all the Apple services (imesage, icloud, etc) work without me having to change my grandfathered data plan?
Thanks in advance!