I've had my G4 for about three months and I have absolutely no complaints other than the "ok Google" command not always working by voice command. Other than that, it's been one of the best phones I've owned. I was coming from a Note 4 Edge which while pretty cool, also was exhibiting a lot of lag and I have rarely if ever used that term for a phone but I figured that one deserved it. Add to that the fact that Samsung decided to follow Apple and do away with removable batteries and SD cards, I did a LOT of research on what else was out there and I finally settled on the G4 (wanted premium phone). I have never regretted that decision. My phone never lags, the battery is as good as you'll find although, as usual, the Blackberry still is king in that department (Passport). I am happy enough with it that I am getting one for my husband now as his Note 4 is starting to act up, even after a master reset. Samsung just isn't going in a direction I like. Their phones are starting to look cheap now except the S6 Active which is still very nice. Anyway, I just don't see how you go wrong with the G4.