hi, I am use R410M to connect to NB-IOT netwaork, howerver it take a long time to search the signal. when use AT+CSQ,it return +CSQ: 99,99,and the AT+CEREG is return +CEREG: 0,2.after several min it will reach the signal with +CSQ: 21,99.
in the forum there is a relate topic about this, it suggest to set band mask, but I set the band mask with AT+UBANDMASK=1,185538719 which I read 185538719 after serch the signal.but it can not faster to register it. how can I fasten it? thanks.