I had this problem. I'm using my Zmax now to answer it. I was thinking I was going to have to reboot my phone when it came to me.. Install a new launcher. I installed a light launcher called Evie that I found on the play store. Not only does my phone run and connect faster, but I also got rid of that annoying GOOGLE banner taking up 1x4 squares at the top of my screen. Try it out and let me know.