ok I've finally found an iphone 7 plus but its sprint.. I'm on att... from what I understand, if I buy it unlocked (which I am), I can literally stick my att sim card in it and it'll work... these apple employees are confusing me though... they keep saying stuff like it might not work as well as an att phone cause its a sprint phone... an apple worker said something about it not being specced for att networks.. is this true? basically what I'm asking is wont my unlocked sprint iphone 7 plus work just as good on an att iphone 7 plus on the att network? my data speeds wont be slower or anything right? my understanding is that the verzion and sprint phones are IDENTICAL to the att tmobile phones (other than the cdma radios).