Needs to be a 7.
I'm a long haul trucker and for some reason S7s don't report back hotspot usage. I have an unlimited US/Canada data plan but only includes 10gb of hotspot.
I had 2 7s but gave one away to a fellow truck driver. Mine is starting to wear out its USB port so I'm looking to replace it before it dies on me.
friend gave me a 9 from rogers. It was unlocked by default but it showed hotspot usage. Which was annoying as I really wanted to get away from Micro USB as these cables are awful.