I'm experiencing an issue where the 4G router MR6400 cannot connect to the internet when using the Softbank carriers. This is the log file. 

2018-10-01 09:00:32 [6] 4G: ERROR: [band scan] product band_support_mask: 0x1a0000800c5

2018-10-01 09:00:32 [6] 4G: ERROR: [band scan] product lte_category = 4.

2018-10-01 09:00:32 [6] 4G: ERROR: [band scan] DM band_support_mask: 0x1a0000800c5

2018-10-01 09:00:32 [6] 4G: ERROR: [band scan] DM lte_category = 4.

2018-10-01 09:00:32 [6] 4G: ERROR: [band scan] Modem band seletion : 0x1a0000800c5. config band : 0x1a0000800c5

2018-10-01 09:00:32 [6] 4G: ERROR: 0x00000047 QMI_ERR_INVALID_QMI_CMD

2018-10-01 09:00:32 [6] 4G: USER: The service status is limited.

2018-10-01 09:00:32 [6] 4G: USER: Not registered, searching!

2018-10-01 09:00:32 [6] 4G: USER: Network type is LTE.

2018-10-01 09:00:32 [6] 4G: ERROR: 0x00000047 QMI_ERR_INVALID_QMI_CMD

2018-10-01 09:00:32 [6] 4G: ERROR: 0x00000047 QMI_ERR_INVALID_QMI_CMD

2018-10-01 09:00:33 [6] 4G: ERROR: 0x00000047 QMI_ERR_INVALID_QMI_CMD

2018-10-01 09:00:33 [5] 4G: init LTE module, set flowstat [enableDataLimit 0, enablePaymentDay 0, paymentDay 1, limitation 0, warningPercent 90]
2018-10-01 09:00:33 [6] 4G: WARN: Sim card is inserted.

2018-10-01 09:00:33 [5] 4G: LTE Module: profile num [7], default profile [0], active profile [6]
2018-10-01 09:00:33 [5] 4G: DM: profile num [7], default profile [0], active profile [6]
2018-10-01 09:00:33 [6] 4G: USER: GET_SMSC_ADDRESS response, value = +819066519300

2018-10-01 09:00:35 [5] System: Enable IPv4 SPI Firewall
2018-10-01 09:00:35 [5] System: Enable IPv6 SPI Firewall
2018-10-01 09:00:47 [6] 4G: USER: The service is not available.

2018-10-01 09:00:47 [6] 4G: USER: Network type is NONE.

2018-10-01 09:00:53 [6] 4G: USER: The service status is limited.

2018-10-01 09:00:53 [6] 4G: USER: Network type is LTE.

2018-10-01 09:01:07 [6] System: Device(1A:26:E0:EC:F8:B7) joins in 2.4G Wlan
2018-10-01 09:01:07 [5] DHCPD: Recv DISCOVER from 1A:26:E0:EC:F8:B7
2018-10-01 09:01:07 [5] DHCPD: Send OFFER with ip 192.168.1.100
2018-10-01 09:01:07 [5] DHCPD: Recv REQUEST from 1A:26:E0:EC:F8:B7
2018-10-01 09:01:08 [5] DHCPD: Send ACK to 192.168.1.100
2018-10-01 09:01:24 [6] System: User(1A:26:E0:EC:F8:B7) logs in on Tether App
2018-10-01 09:01:33 [6] 4G: WARN: Network selecting failed, mostly rejected.

2018-10-01 09:01:39 [6] 4G: USER: Get user's profile now.

2018-10-01 09:01:39 [6] 4G: USER: GetCurrProf result is:  ipver:0  staticApn:1  authType:2  pkgName:plus.4g  profname:plus.4g  apn:  usr:plus  psw:4g  

2018-10-01 09:01:39 [6] 4G: USER: Get user's profile now.

2018-10-01 09:01:39 [6] 4G: USER: GetCurrProf result is:  ipver:0  staticApn:1  authType:2  pkgName:plus.4g  profname:plus.4g  apn:  usr:plus  psw:4g  

2018-10-01 09:01:40 [5] 4G: set LTE static IP connection, needSetDefaultGw:1
2018-10-01 09:02:25 [6] 4G: USER: Get user's profile now.

2018-10-01 09:02:25 [6] 4G: USER: GetCurrProf result is:  ipver:0  staticApn:0  authType:2  pkgName:plus.4g  profname:plus.4g  apn:plus.4g  usr:plus  psw:4g  

2018-10-01 09:02:25 [6] 4G: USER: Get user's profile now.

2018-10-01 09:02:25 [6] 4G: USER: GetCurrProf result is:  ipver:0  staticApn:0  authType:2  pkgName:plus.4g  profname:plus.4g  apn:plus.4g  usr:plus  psw:4g  

2018-10-01 09:02:25 [5] 4G: set LTE static IP connection, needSetDefaultGw:1
2018-10-01 09:04:07 [5] DHCPD: Recv DISCOVER from BC:C3:42:AF:7E:26
2018-10-01 09:04:07 [5] DHCPD: Send OFFER with ip 192.168.1.101
2018-10-01 09:04:08 [5] DHCPD: Recv REQUEST from BC:C3:42:AF:7E:26
2018-10-01 09:04:08 [5] DHCPD: Send ACK to 192.168.1.101
2018-10-01 09:04:39 [6] System: User(Mac:BC:C3:42:AF:7E:26;IP:192.168.1.101) logs in.

Please help me check issue! Thanks you