I have an LG G2 that recently started giving me real problems. It randomly shuts off while I'm using it and sometimes it gets real hot near the back buttons. I only use the charger it came with but the battery doesn't last even half the day with minimal use. It runs extremely slow now, often getting hung up when I'm doing something as simple exiting an app. I have had the phone a year and a couple months so I'm sure the warranty is probably up and I don't have insurance. Is there anything that can be done to help?