A bit after I posted my initial question I went to within about a thousand feet from a new band 12 T-Mobile tower near Smokey Point (Marysville), Washington. Despite what one might think, my 7 Plus iPhone is again outperforming the iPad Air 3rd gen fairly significantly in terms of data speed. Can anyone tell me what is going on?
Please check out the link I posted above and see if that helps out. Thanks.