This just started happening to me after using the LG G2 since 12/07/2013. I hadn't thought about the drawing "test", but sure enough, it showed where the area was not responding which is consistent with the non functioning keyboard areas). Other than entering passwords requiring these letters/numbers on the affected keyboard area, the solution I'm pursuing is to change the passwords (needed to do that anyway) to use working letters/numbers. Hopefully, this solution will work until my contract is up in November with Spring, then I can dump them and the LG phone. Too bad as I really liked the LG G2, but seems like a lot of folks are experiencing similar problems.