adb shell
cat /dev/smd8 &
# echo -e "AT\r\n" > /dev/smd8
# AT
OK
查看当前注册是LTE还是NSA或者SA
echo -e "AT+CPSI?\r\n" > /dev/smd8
+CPSI: LTE,Online,460-01,0x1824,9398815,248,EUTRAN-BAND3,1650,5,5,
adb shell
cat /dev/smd8 &
# echo -e "AT\r\n" > /dev/smd8
# AT
OK
查看当前注册是LTE还是NSA或者SA
echo -e "AT+CPSI?\r\n" > /dev/smd8
+CPSI: LTE,Online,460-01,0x1824,9398815,248,EUTRAN-BAND3,1650,5,5,