麻烦技术发一个 EC20CEFDG 最后一个版本的固件
原本联通卡能注册 volte 打电话的，最近不知道是不是基站更新了，注册不上。
附近也没有wcdma基站了。
个人觉得的是 MBN 配置太旧了。
OK
+QMBNCFG: "List",0,0,0,"ROW_Generic_3GPP",0x05010814,201704141
+QMBNCFG: "List",1,1,1,"OpenMkt-Commercial-CU",0x05011510,201704141
+QMBNCFG: "List",2,0,0,"OpenMkt-Commercial-CT",0x0501131C,201704141
+QMBNCFG: "List",3,0,0,"Volte_OpenMkt-Commercial-CMCC",0x05012011,201706021
+QMBNCFG: "List",4,0,0,"OpenMkt-Commercial-CN",0x05809201,201706091
OK
Quectel
EC20F
Revision: EC20CEFDGR06A08M4G
OK
+QENG: "servingcell","NOCONN","LTE","FDD",460,01,6FF2D33,139,1650,3,5,5,7A40,-85,-11,-54,-1,36
OK
+QENG: "neighbourcell intra","LTE",1650,139,-13,-89,-56,-20,33,5,20,6,58
+QENG: "neighbourcell inter","LTE",100,-,-,-,-,-,33,0,22,5,-,-,-,-
+QENG: "neighbourcell inter","LTE",300,-,-,-,-,-,0,0,22,5,-,-,-,-
AT+QENG="3gcomm"
OK
+QCFG: "ims",1,0
OK
+CGACT: 1,1
+CGACT: 2,0
+CGACT: 3,0
OK
+CGDCONT: 1,"IPV4V6","3gnet","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 2,"IPV4V6","3GWAP","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
+CGDCONT: 3,"IPV4V6","WONET","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
OK
+COPS: 0,0,"CHN-UNICOM",7
OK