The Android API does not have a published method to read the band and bandwidth information off the phone. This means we cannot map these important details together with our other signal data without your help! You can check the band your phone is on by entering ‘Service Mode’. On Samsung phones this is done by entering *#0011#, but on other phones the codes can be different – sometimes the codes will also change based on the network operator you have.
Once you’re in Service Mode, look for the Band information, and if you find it, the LTE DL BW (LTE download bandwidth) or the Earfcn_dl (which stands for E-UTRA Absolute Radio Frequency Channel Number Downlink, and refers to the download frequency).
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