How to know if i'm using Wi-Fi or Data on my iPhone 5?

The top left of the screen says Verizon LTE… Does this mean that I'm connected to, and using the wireless? I don't want to go over on my data amount…

When using Wi-Fi the little Wi-Fi icon appears in the upper lefthand corner. Another way to check is go into settings and look at the Wi-Fi tab. If it's connected it will say the name of the network next to it. If it's not it says not connected

Of the screen says LTE then it is LTE. If it had a little Wi-Fi icon in the top left corner then the Wi-Fi is on.

Am I using my data when the LTE signal is showing?