100 GB One Drive Storage ?

I know this is the section for international Edge+, however, I think this is is the best place to put my question since everybody, including other carriers, also follow this section (apart from their carrier specific forum). I've bough AT&T Samsung Galaxy S6 Edge+ 64 Gig variant. I was aware of the fact that to compensate for the SD Card (I know its not really a substitute, but still better than nothing), Samsung collaborated with Microsoft to offer 100 GB of One Drive storage for 2 Years. When I registered for One Drive yesterday, I just got 30 GB, which is common for all smartphones when you enable auto backup. Ofcourse my phone didn't come with pre-loaded One Drive app, so I'm assuming AT&T must have removed the feature (for some reason :rolleyes:). I have heard that I can just hit any BestBuy store to login with my One Drive account in their international version demo handset and I would be able to get that 100 GB, but I'm interested in knowing this :
Did all other carriers removed this 100 GB of storage or is it just AT&T ?