I got a MC7455 card (it shows support for global band including Americas, Asia, Europe, etc.). I put it into a MIFI. It shows detected, but there is no ttyUSB*.
When I tried to connect to either T-Mobile or Verizon with working SIM card, it shows ‘connecting’…but no IP.
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Mon Jul 17 21:59:36 2017 kern.info kernel: [ 579.640000] usb 1-1.2: new high-speed USB device number 6 using ehci-platform
Mon Jul 17 21:59:36 2017 kern.warn kernel: [ 579.750000] usb 1-1.2: config 1 has an invalid interface number: 8 but max is 4
Mon Jul 17 21:59:36 2017 kern.warn kernel: [ 579.750000] usb 1-1.2: config 1 has an invalid interface number: 10 but max is 4
Mon Jul 17 21:59:36 2017 kern.warn kernel: [ 579.760000] usb 1-1.2: config 1 has no interface number 1
Mon Jul 17 21:59:36 2017 kern.warn kernel: [ 579.760000] usb 1-1.2: config 1 has no interface number 4
Mon Jul 17 21:59:36 2017 kern.info kernel: [ 579.790000] qmi_wwan 1-1.2:1.8: cdc-wdm0: USB WDM device
Mon Jul 17 21:59:36 2017 kern.info kernel: [ 579.790000] qmi_wwan 1-1.2:1.8 wwan0: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 21:59:36 2017 kern.info kernel: [ 579.810000] qmi_wwan 1-1.2:1.10: cdc-wdm1: USB WDM device
Mon Jul 17 21:59:36 2017 kern.info kernel: [ 579.810000] qmi_wwan 1-1.2:1.10 wwan1: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 21:59:52 2017 kern.info kernel: [ 595.020000] usb 1-1.2: USB disconnect, device number 6
Mon Jul 17 21:59:52 2017 kern.info kernel: [ 595.020000] qmi_wwan 1-1.2:1.8 wwan0: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 21:59:52 2017 kern.info kernel: [ 595.060000] qmi_wwan 1-1.2:1.10 wwan1: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:00:00 2017 kern.info kernel: [ 603.450000] usb 1-1.2: new high-speed USB device number 7 using ehci-platform
Mon Jul 17 22:00:00 2017 kern.warn kernel: [ 603.560000] usb 1-1.2: config 1 has an invalid interface number: 8 but max is 4
Mon Jul 17 22:00:00 2017 kern.warn kernel: [ 603.560000] usb 1-1.2: config 1 has an invalid interface number: 10 but max is 4
Mon Jul 17 22:00:00 2017 kern.warn kernel: [ 603.570000] usb 1-1.2: config 1 has no interface number 1
Mon Jul 17 22:00:00 2017 kern.warn kernel: [ 603.570000] usb 1-1.2: config 1 has no interface number 4
Mon Jul 17 22:00:00 2017 kern.info kernel: [ 603.600000] qmi_wwan 1-1.2:1.8: cdc-wdm0: USB WDM device
Mon Jul 17 22:00:00 2017 kern.info kernel: [ 603.600000] qmi_wwan 1-1.2:1.8 wwan0: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:00:00 2017 kern.info kernel: [ 603.620000] qmi_wwan 1-1.2:1.10: cdc-wdm1: USB WDM device
Mon Jul 17 22:00:00 2017 kern.info kernel: [ 603.620000] qmi_wwan 1-1.2:1.10 wwan1: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:00:15 2017 kern.info kernel: [ 618.830000] usb 1-1.2: USB disconnect, device number 7
Mon Jul 17 22:00:15 2017 kern.info kernel: [ 618.830000] qmi_wwan 1-1.2:1.8 wwan0: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:00:15 2017 kern.info kernel: [ 618.870000] qmi_wwan 1-1.2:1.10 wwan1: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:00:24 2017 kern.info kernel: [ 627.510000] usb 1-1.2: new high-speed USB device number 8 using ehci-platform
Mon Jul 17 22:00:24 2017 kern.warn kernel: [ 627.620000] usb 1-1.2: config 1 has an invalid interface number: 8 but max is 4
Mon Jul 17 22:00:24 2017 kern.warn kernel: [ 627.620000] usb 1-1.2: config 1 has an invalid interface number: 10 but max is 4
Mon Jul 17 22:00:24 2017 kern.warn kernel: [ 627.630000] usb 1-1.2: config 1 has no interface number 1
Mon Jul 17 22:00:24 2017 kern.warn kernel: [ 627.640000] usb 1-1.2: config 1 has no interface number 4
Mon Jul 17 22:00:24 2017 kern.info kernel: [ 627.670000] qmi_wwan 1-1.2:1.8: cdc-wdm0: USB WDM device
Mon Jul 17 22:00:24 2017 kern.info kernel: [ 627.690000] qmi_wwan 1-1.2:1.8 wwan0: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:00:24 2017 kern.info kernel: [ 627.700000] qmi_wwan 1-1.2:1.10: cdc-wdm1: USB WDM device
Mon Jul 17 22:00:24 2017 kern.info kernel: [ 627.700000] qmi_wwan 1-1.2:1.10 wwan1: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:00:40 2017 kern.info kernel: [ 642.890000] usb 1-1.2: USB disconnect, device number 8
Mon Jul 17 22:00:40 2017 kern.info kernel: [ 642.890000] qmi_wwan 1-1.2:1.8 wwan0: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:00:40 2017 kern.info kernel: [ 642.960000] qmi_wwan 1-1.2:1.10 wwan1: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:00:48 2017 kern.info kernel: [ 651.580000] usb 1-1.2: new high-speed USB device number 9 using ehci-platform
Mon Jul 17 22:00:48 2017 kern.warn kernel: [ 651.690000] usb 1-1.2: config 1 has an invalid interface number: 8 but max is 4
Mon Jul 17 22:00:48 2017 kern.warn kernel: [ 651.690000] usb 1-1.2: config 1 has an invalid interface number: 10 but max is 4
Mon Jul 17 22:00:48 2017 kern.warn kernel: [ 651.700000] usb 1-1.2: config 1 has no interface number 1
Mon Jul 17 22:00:48 2017 kern.warn kernel: [ 651.710000] usb 1-1.2: config 1 has no interface number 4
Mon Jul 17 22:00:48 2017 kern.info kernel: [ 651.720000] qmi_wwan 1-1.2:1.8: cdc-wdm0: USB WDM device
Mon Jul 17 22:00:48 2017 kern.info kernel: [ 651.740000] qmi_wwan 1-1.2:1.8 wwan0: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:00:48 2017 kern.info kernel: [ 651.750000] qmi_wwan 1-1.2:1.10: cdc-wdm1: USB WDM device
Mon Jul 17 22:00:48 2017 kern.info kernel: [ 651.750000] qmi_wwan 1-1.2:1.10 wwan1: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:01:06 2017 kern.info kernel: [ 669.000000] usb 1-1.2: USB disconnect, device number 9
Mon Jul 17 22:01:06 2017 kern.info kernel: [ 669.010000] qmi_wwan 1-1.2:1.8 wwan0: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:01:06 2017 kern.info kernel: [ 669.060000] qmi_wwan 1-1.2:1.10 wwan1: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:01:15 2017 kern.info kernel: [ 678.710000] usb 1-1.2: new high-speed USB device number 10 using ehci-platform
Mon Jul 17 22:01:15 2017 kern.warn kernel: [ 678.820000] usb 1-1.2: config 1 has an invalid interface number: 8 but max is 4
Mon Jul 17 22:01:15 2017 kern.warn kernel: [ 678.820000] usb 1-1.2: config 1 has an invalid interface number: 10 but max is 4
Mon Jul 17 22:01:15 2017 kern.warn kernel: [ 678.830000] usb 1-1.2: config 1 has no interface number 1
Mon Jul 17 22:01:15 2017 kern.warn kernel: [ 678.840000] usb 1-1.2: config 1 has no interface number 4
Mon Jul 17 22:01:15 2017 kern.info kernel: [ 678.870000] qmi_wwan 1-1.2:1.8: cdc-wdm0: USB WDM device
Mon Jul 17 22:01:16 2017 kern.info kernel: [ 678.880000] qmi_wwan 1-1.2:1.8 wwan0: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:01:16 2017 kern.info kernel: [ 678.890000] qmi_wwan 1-1.2:1.10: cdc-wdm1: USB WDM device
Mon Jul 17 22:01:16 2017 kern.info kernel: [ 678.900000] qmi_wwan 1-1.2:1.10 wwan1: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:01:31 2017 kern.info kernel: [ 694.090000] usb 1-1.2: USB disconnect, device number 10
Mon Jul 17 22:01:31 2017 kern.info kernel: [ 694.090000] qmi_wwan 1-1.2:1.8 wwan0: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:01:31 2017 kern.info kernel: [ 694.130000] qmi_wwan 1-1.2:1.10 wwan1: unregister ‘qmi_wwan’ usb-ehci-platform-1.2, WWAN/QMI device
Mon Jul 17 22:01:39 2017 kern.info kernel: [ 702.780000] usb 1-1.2: new high-speed USB device number 11 using ehci-platform
Mon Jul 17 22:01:40 2017 kern.warn kernel: [ 702.890000] usb 1-1.2: config 1 has an invalid interface number: 8 but max is 4
Mon Jul 17 22:01:40 2017 kern.warn kernel: [ 702.890000] usb 1-1.2: config 1 has an invalid interface number: 10 but max is 4
Mon Jul 17 22:01:40 2017 kern.warn kernel: [ 702.900000] usb 1-1.2: config 1 has no interface number 1
Mon Jul 17 22:01:40 2017 kern.warn kernel: [ 702.900000] usb 1-1.2: config 1 has no interface number 4
Mon Jul 17 22:01:40 2017 kern.info kernel: [ 702.970000] qmi_wwan 1-1.2:1.8: cdc-wdm0: USB WDM device
Mon Jul 17 22:01:40 2017 kern.info kernel: [ 702.990000] qmi_wwan 1-1.2:1.8 wwan0: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:01:40 2017 kern.info kernel: [ 703.000000] qmi_wwan 1-1.2:1.10: cdc-wdm1: USB WDM device
Mon Jul 17 22:01:40 2017 kern.info kernel: [ 703.000000] qmi_wwan 1-1.2:1.10 wwan1: register ‘qmi_wwan’ at usb-ehci-platform-1.2, WWAN/QMI device, f6:09:5b:c5:97:c2
Mon Jul 17 22:01:55 2017 daemon.notice netifd: Interface ‘modem’ is setting up now
Mon Jul 17 22:01:56 2017 daemon.notice netifd: modem (25957): Waiting for network registration
Mon Jul 17 22:01:56 2017 daemon.notice netifd: modem (25957): Starting network internet
Mon Jul 17 22:01:57 2017 daemon.notice netifd: modem (25957): Starting DHCP
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem_4’ is enabled
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem_6’ is enabled
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem’ is now up
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Network device ‘wwan0’ link is up
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Network alias ‘wwan0’ link is up
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem_4’ has link connectivity
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem_4’ is setting up now
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem_6’ has link connectivity
Mon Jul 17 22:01:57 2017 daemon.notice netifd: Interface ‘modem_6’ is setting up now
Mon Jul 17 22:01:57 2017 daemon.notice netifd: modem (25957): Command failed: Unknown error
Mon Jul 17 22:01:57 2017 daemon.notice netifd: modem (25957): Command failed: Unknown error
Mon Jul 17 22:01:57 2017 user.notice root: qmi bringup failed, retry in 15s
Mon Jul 17 22:01:58 2017 daemon.notice netifd: modem_4 (26233): udhcpc (v1.24.1) started
Mon Jul 17 22:01:59 2017 daemon.notice netifd: modem_4 (26233): Sending discover…
Mon Jul 17 22:02:02 2017 daemon.notice netifd: modem_4 (26233): Sending discover…
Mon Jul 17 22:02:05 2017 daemon.notice netifd: modem_4 (26233): Sending discover…
Mon Jul 17 22:02:12 2017 user.warn mwan3: Could not find gateway for interface modem (wwan0)
Mon Jul 17 22:02:14 2017 user.notice firewall: Reloading firewall due to ifup of modem (wwan0)
Mon Jul 17 22:02:58 2017 daemon.notice netifd: modem_4 (26233): Received SIGTERM
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem_4’ is now down
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem_4’ has link connectivity loss
Mon Jul 17 22:02:58 2017 daemon.notice netifd: modem (32228): Stopping network
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem_6’ is now down
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem_6’ is disabled
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem_6’ has link connectivity loss
Mon Jul 17 22:02:58 2017 daemon.notice netifd: modem (32228): Command failed: Permission denied
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem’ is now down
Mon Jul 17 22:02:58 2017 daemon.notice netifd: Interface ‘modem’ is setting up now
Mon Jul 17 22:02:59 2017 user.notice mwan3: ifdown interface modem (unknown)
Mon Jul 17 22:03:00 2017 daemon.notice netifd: modem (32324): Waiting for network registration
Mon Jul 17 22:03:00 2017 daemon.notice netifd: modem (32324): Starting network internet
Mon Jul 17 22:03:19 2017 daemon.notice netifd: modem (32324): Starting DHCP
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem’ is now up
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Network device ‘wwan1’ link is up
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Network alias ‘wwan1’ link is up
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem_4’ is enabled
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem_4’ has link connectivity
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem_4’ is setting up now
Mon Jul 17 22:03:19 2017 daemon.notice netifd: modem (32324): Command failed: Unknown error
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem_6’ is enabled
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem_6’ has link connectivity
Mon Jul 17 22:03:19 2017 daemon.notice netifd: Interface ‘modem_6’ is setting up now
Mon Jul 17 22:03:19 2017 daemon.notice netifd: modem (32324): Command failed: Unknown error
Mon Jul 17 22:03:19 2017 user.notice root: qmi bringup failed, retry in 15s
Mon Jul 17 22:03:20 2017 daemon.notice netifd: modem_4 (1730): udhcpc (v1.24.1) started
Mon Jul 17 22:03:21 2017 daemon.notice netifd: modem_4 (1730): Sending discover…
Mon Jul 17 22:03:24 2017 daemon.notice netifd: modem_4 (1730): Sending discover…
Mon Jul 17 22:03:27 2017 daemon.notice netifd: modem_4 (1730): Sending discover…