I just switched to the Note 3 full time from a 5s. Previously the 5s was my main phone and the Note 3 was my "tablet". I must say the Note 3 is really sucking as a phone, I'm quite disappointed. My main issues are phone use. The proximity sensor is terrible, half the time it doesn't register when I put it to my ear and the screen stays on, also if the screen does turn off when I put the phone down either it takes several seconds for it to turn on again, or it won't turn on. That's unacceptable as I need to put people on speaker phone and look things up on the phone often. The phone app also seems quite laggy, opening contacts up for example sometimes takes 2-3 seconds versus being instant on any other phone I've had. Of course I still have the same complaints I had with my previous android phones that Google Now is too internet centric and doesn't work well as a personal assistant, and S-voice is utter garbage which I refuse to use. The last issue is reception, it's not as good as my 5s looking at them side by side. It's not terrible, but I have lost signal in places where my 5s would hang on to one bar. Also LTE seems spotty, in areas where my 5s has LTE the Note 3 does not. Sucked to drive to work today and have Waze lose the network intermittently while I had reception, don't know what that's about, maybe the gps? I'm on an unrooted 4.4.2 AT&T Note 3. I have run a couple of system cleaners and in general use the phone seems snappy enough. Am I doing something wrong, or is this how it works?