They removed it and now tell you if your on lte or not now ? I am on iOS 9.3 but I haven't even read what's in it so I guess could be that ?
First I heard of this as I'm on sprint as well. Can you give more detail?
It shows right in the picture. Instead of the usual logo showing how strong or weak your wifi signal is you have LTE there
Just did a restart and it seemed to fix the issue. Seems to be a bug.