I was very happy at first when I upgraded to 4.4 from 4.3. I had a lot of issues after the 4.3 upgrade. My major complaint with 4.4 is that my WiFi connection drops several times a day. My wife next to me is surfing the web at the same time with no problem. I have to choose another weak WiFi signal and then reconnect to mine to get it working again. Does anyone else have this problem?