Hi there and welcome
To check Greg, is the new iPhone connected to the same Wifi network as the printer? As this is needed.
Please let me know
ok, have you installed the Brother™ iPrint&Scan App thats needed on the iPhone? You get it from the app store.
Can you install it and run it and tell me if you can print from within this please
ok, when you say you cannot get further, what exactly are you getting stuck on, which step?
Your trying to do it over wifi, so please choose the wifi option.
what was the make and model of the old phone?
try to print from it now, does it then print?
try to print from this phone, does it still print?
so also from the old phone its not working right?