Recently got a Zenfone 2 which is LTE capable. Using it in Naples/Fort Meyers have not seen it on my phone yet.
4g and it seems adequate but does anyone know if they even have LTE in my area.
The Zenfone will not show "LTE" when connected. If it is showing "4G" that is LTE for these type of phones. Such as I have an international LG G4 and it only shows "4G" since "4G" in the world is LTE unlike the U.S. where they count 4G as HSPA+.
It also depends a bit on the phone. Stock Android devices (like the Nexus devices) specify H or LTE no matter where you are.