17 See Your Data Usage
This lets you see the current data usage on your cellular plan, as well as the remaining available data. A handy way of seeing how much data you’re using before you get one of those ominous “your data is running out” texts from your ISP. *3282#
(Note: This differs slightly between carriers. See below)
- AT&T: *3282#
- Verizon: #3282
- T-Mobile: #932#