about cellular band selection: whole picture needed

[Kai]

Hi,

I've been testing the sample code at_clent with Verizon wireless. I can send AT command to the DK via nRF Connect "LTE Link Monitor".

Q1. run AT%XCBAND=? to print the list of supported bands, it shows "3 4 13 20". How does the modem know the list of supported bands -- are they defined in the SIM card?

Q2. run AT%XCBAND to print the current band, it shows "13". If there are more than one band available in the air, what makes the modem select one band over others?

Q3. run AT%XBANDLOCK=2,"1000" to lock the band 4, then run AT%XCBAND to print the current band, it still shows "13". why it doesn't show "4"?

Best,

Kai

[Martin Lesund]

Hi Kai, 
I've managed to reproduce the issue and we are investigating further the cause of this behavior.

Thank you for your patience

[Martin Lesund]

Hi Kai,

Thank you for addressing this issue.

It has been handled internally and will be fixed in the next revision of the modem firmware.

(Released in the near future)