experimenting with a Q24 classic shows an unexpected behaviour on working with the
command ‘AT+WBCM=3,0,4200,2800’, to change the level of the battery charge indications.
The reply of the modem is always ‘+CME ERROR: 3’, which means ‘operation not allowed’.
The same command sent to an older Q2406B works with no errors.
Where is my error
Thank you !