I have an iPhone 5S and was messing with my settings and cannot figure out what I did. Whenever I text another iPhone user, my message comes over in gray instead of blue, and it comes over sent from my email instead of an iMessage. I checked my settings and my iMessage is on. I don't know where to come from here. Can anyone walk me thru the process to correct this glitch? Incidentally, this just started happening after I updated to the iOS 9.3.2.