I wanted to see how this other messaging app was going to work on my phone and Gear S. To make it my default I had to go to default messaging app and turn off my stock message app. But the new app doesn't allow me to respond to my text messages from my Gear S so I need to turn back on the stock app. However it's no longer there. My phone is not rooted I just simply turned it off. Is there anyway to turn it back on?