How do I ask about that. I ordered online, and it didn't mention it.
Someone posted a link to that earlier, basically if you’ve had an iPhone on T-Mobile since Nov of 2015 you’re eligible for a loyalty credit using a certain promo code. I just submitted mine. The catch is you can’t do it until you have your IMEI number.
Now it’s important to note I haven’t been approved yet but I did apply so fingers crossed