Unlike many people here I was happy with ICS and my Nexus except for reception, 4 dropped calls while driving in 3 months is bad to me, my Fascinate did not drop calls. My data connection inside my house was almost non-existent with the Fascinate and also with Nexus running ICS. I had no 3g signal in my home with Fascinate and no 4g signal with Nexus/ICS. I live in an area with strong 4g/3g coverage...except inside my house. My phone works as a phone in my home and that was it (unless I connect to my network via WiFi) so along came Jelly Bean.
I now average 10 mbps down and 1.5 mbps up inside my house since JB; reported on LTE-13 band, before JB I was connecting to LTE-14 on ocassion and it never would lock in and remain stable, once or twice Speedtest.net reported 0.2 mbps down and 0.3 mbps up, so I just got used to using WiFi in my home so my phone could receive data. The change was right after I installed JB, I am very happy with my Nexus right now. Quadrant scores went up from 2200 to 2400 average, that is not as significant as the reception improvement but I thought I mention it.
I now average 10 mbps down and 1.5 mbps up inside my house since JB; reported on LTE-13 band, before JB I was connecting to LTE-14 on ocassion and it never would lock in and remain stable, once or twice Speedtest.net reported 0.2 mbps down and 0.3 mbps up, so I just got used to using WiFi in my home so my phone could receive data. The change was right after I installed JB, I am very happy with my Nexus right now. Quadrant scores went up from 2200 to 2400 average, that is not as significant as the reception improvement but I thought I mention it.