I'm too facing similar problems with regards to touch panel, which I mentioned previously. Again, there's a delay in touch command, sometimes upper section of screen(app icons) doesn't respond while touching, after restarting it starts working normally for 4-8 hours then again screens upper icons touch response doesn't work then again restart and the cycle goes on. There also problem in default keyboard touch response in inaccurate sometimes. PS: already did factory reset. Encountering problem when phone is not on charging.