It could be but I don't really buy that theory. If that was the reasoning, then there will still not be any Spark devices released yet. Sprint back in Nov 2013 thought that it was good enough to start releasing Spark devices with all 3 bands enabled. Actually since Nov 2013, Sprint has made some nice progress on B41 LTE deployment so it should be in decent shape now. Obviously Sprint has a long long way to go in terms of its vision of deploying B41 LTE nationwide but in large markets it should be alright.