We provide information from sources within Sprint. If you were a S4GRU Sponsor member, you would have access to site maps that would show you which sites have upgrades. You could then even go check them out yourself.
We do provide this thread for non-sponsors: http://s4gru.com/index.php?/topic/212-network-visionlte-deployment-running-list/page-4&do=findComment&comment=145628
It shows that as of the end of May, 18% of sites had received upgrades. If Phoenix were a Samsung or an Ericsson market, you would already have started seeing some LTE signals around Phoenix. However, your market is an Alcatel Lucent market. A/L waits until they have a lot of sites upgraded, and then starts bringing LTE live when they have a good backlog of sites to keep their LTE techs consistently busy.
The Phoenix market is just about to that threshold when A/L will start firing up the LTE side of upgrades. There will be live LTE soon in the Phoenix market. As for the delay, Sprint is behind schedule. They started a few months late. What can I say? I'm not deploying the stuff. But even Sprint has said their Network Vision upgrades are running between 3 - 6 months behind.
Robert