NetMonitor does not show LTE sites on their maps. In their app, they will show connection type as LTE. But then in the map, it never shows the LTE site it is connected to, but rather the 1x (voice) site. And these are very often different.
Also, there is an issue with NetMonitor and CDMA Field Test showing accurate results in some markets, even for 1x signals: http://s4gru.com/index.php?/topic/1367-cdma-towers-that-squawk-the-wrong-coordinates/
Robert