1. Open the dial pad on your phone and enter *3001#12345#*, then tap the dial button

2. Tap "LTE"

3. Tap "Serving Cell Info"

4. Verify the "freq_band_ind". This is the frequency band which your phone is connected to. Notate the number (2, 4, 5, 7, 12, 13, 14, 17, 30, 66, 71.)

5. Download or open the Nperf Speedtest app.

6. Tap "Run Full Test"

7. Note the performance (upload, download, and latency.) If performance drastically changes at any time repeat these steps to verify what frequency band is performing highest and lowest to help determine the necessary equipment to optimize your internet connection through that cell carrier.