The LG G4 is one of the best phones of 2015! It has a great camera and is super fast. In a recent speed test that I did it opened up many apps faster than the Galaxy S6 Edge. The fact that it has a removable battery and expandable storage makes it the only option for some of you who are upgrading devices. While it is a great phone, and can compete with all other flagships currently available it is not without its flaws.
Many users have been complaining of some lag especially when multitasking and switching back and forth between open apps. This can be particularly annoying especially when you consider it is running a hexacore processor. That's more cores than my MacBook pro has for crying out loud! Some users have suggested toggling the "Force GPU Rendering" and turning off the multiwindow feature can help. I personally have not experienced this lag on my G4.
Another big issue that many of you have been complaining about is occasional missed taps where the touchscreen doesn't register your taps. A youtube video uploaded a few days ago demonstrates this problem, and you can clearly see it is a flaw and not a user error. When this was brought to the attention of Buzz Jenson, Head of marketing for LG USA, he mentioned that there was an OTA released that was supposed to fix the issue. What he meant to say is that the LG Keyboard was updated via LG Apps. This means that touchscreen issues outside of the keyboard remain. Hopefully we will see a full fix for this soon.
via XDA