How do I know when I'm using my High Speed 4G LTE data?

[relztrah]

Total newbie question #2: I'm on the Ultra $19/mo plan (for this month anyway) with only 100MB of data. I only need this much data because I'm nearly always around wifi. I can see the antenna indicator showing that I'm on wifi, but how do I know when I'm using my cell data? And will my One Touch default to wifi when I'm within range of a recognized network?

Also, is there a built-in app or widget or something showing me how much data I've used or do I download one from Google Play Store?

Thanks for your help.

 

[Golfdriver97]

Welcome to the forums. Your status bar should show LTE next to your signal. Otherwise, you can check in Settings>about device>Status.

As for how much Data you have used, you can check that in Settings>Data Usage