Chosen Solution
I could be typing a message and my phone will randomly start exiting out of apps as if I were constantly pressing the back button. Sometimes, it will even send a message when I’m not done with it. And, on the home screen, it will take me directly to the first page and I can’t seem to click anywhere on the screen or it will just vibrate continuously. To stop this from occurring, I have to press the power button to put in sleep mode & then unlock it and go back to what I was doing, but majority of times it just continues. Why does this occur?
Heads up: it’s looking grim. I found this thread and this other question (Why does my BLU vivo XL2 keep exiting applications?) with people having the same issue. I found this question from that one, and I’m basically reposting the answer I gave the other person so that you can accurately say what fixes the problem for you, etc. So far, I have not seen a for-sure solution. However, you might want to explore this website. It appears to be unofficial developers seeking to fix things, but I’d advise reading their fine print for yourself. Since I had to look it up myself, here’s an explanation of ROM. Good luck!
Removing the silicone case and screen protector seems to have taken care of the same problem with my phone.