It is pretty sad indeed that this device would experience any lag at all. One would think that with 2 GB RAM and a blazing fast processor the last issue the end user would face on this device would be lag of ANY sort. I ditched my iPhone 5 for this and I am not happy. The lag issue is unacceptable. Forget about all of the fixes out there. These issues should have been fixed before the GS 4 shipped. Period. I'm 90% sure that my device will be returned, and I will simply return to my iPhone 5. True, the display on the iPhone 5 is too small for my liking. However, lag was never, ever a problem. Never. I HATE THE LAG ON THE GS 4.