Modem Troubleshooting

Modem Troubleshooting

Note: The commands below need to be run from the root shell. This is accessed from the admin CLI by using: shell sudo su -

List connected modems

mmcli -L

Found 1 modems:

/org/freedesktop/ModemManager1/Modem/0 [Sierra Wireless, Incorporated] EM7565

Note: The highlighted number indicates the current index number for the modem(s) installed. This index number is used in several of the subsequent commands. Replace 0 with the index number from the output as needed.

List Modem connection details

mmcli -m 0

/org/freedesktop/ModemManager1/Modem/0 (device id '51fd0aad8fb4f35a5124319dd0b1f3419423cf72')

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Hardware | manufacturer: 'Sierra Wireless, Incorporated'

| model: 'EM7565'

| revision: 'SWI9X50C_01.07.02.00 6c91bc jenkins 2018/06/13 23:08:16'

| supported: 'gsm-umts

| lte

| gsm-umts, lte'

| current: ‘gsm-umts, lte'

| equipment id: '359260080243113'

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System | device: '/sys/devices/pci0000:00/0000:00:14.0/usb2/2-1/2-1.2'

| drivers: 'qcserial, qmi_wwan'

| plugin: 'Sierra EM7565'

| primary port: 'cdc-wdm0'

| ports: 'ttyUSB0 (qcdm), cdc-wdm0 (qmi), wwan0 (net)'

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Numbers | own : '447432xxxxx'

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Status | lock: 'sim-pin2'

| unlock retries: 'sim-pin (3), sim-pin2 (3), sim-puk (10), sim-puk2 (10)'

| state: 'registered’/’locked’/’connected’

| power state: 'on'

| access tech: 'lte'

| signal quality: '62' (recent)

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Modes | supported: 'allowed: 2g, 3g, 4g; preferred: none'

| current: 'allowed: 2g, 3g, 4g; preferred: none'

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Bands | supported: 'u2100, u1900, u17iv, u800, u850, u900, u17ix, eutran-i, eutran-ii, eutran-iii, eutran-iv, eutran-v, eutran-vii, eutran-viii, eutran-ix, eutran-xii, eutran-xiii, eutran-xviii, eutran-xix, eutran-xx, eutran-xli'

| current: 'u2100, u1900, u17iv, u800, u850, u900, u17ix, eutran-i, eutran-ii, eutran-iii, eutran-iv, eutran-v, eutran-vii, eutran-viii, eutran-ix, eutran-xii, eutran-xiii, eutran-xviii, eutran-xix, eutran-xx, eutran-xli'

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IP | supported: 'ipv4, ipv6, ipv4v6'

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3GPP | imei: 'xxxxxxxx'

| enabled locks: 'none’

| operator id: '23430'

| operator name: 'EE'

| subscription: 'unknown'

| registration: 'home'

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SIM | path: '/org/freedesktop/ModemManager1/SIM/0'

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Bearers | paths: '/org/freedesktop/ModemManager1/Bearer/0'

Unlock SIM

To unlock

mmcli -i 0 --pin=<PIN>

To remove PIN from SIM

mmcli -s 0 --pin=<PIN> --disable-pin

Hardware Supported (type of connection)

'2G' - 2G technologies, e.g. EDGE, CDMA1x

'3G' - 3G technologies, e.g. HSPA, EV-DO

'4G' - 4G technologies, e.g. LTE

'ANY' - for all supported modes.

Bearer Information

mmcli -m 0 --list-bearers

Found 1 bearers:

/org/freedesktop/ModemManager1/Bearer/1

Note: The blue highlighted number represents the current bearer for the modem. Replace 1 with the bearer number from the output as needed.

mcli -b 0

Bearer '/org/freedesktop/ModemManager1/Bearer/0'

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Status | connected: 'no'

| suspended: 'no'

| interface: 'unknown'

| IP timeout: '20'

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Properties | apn: 'broadband'

| roaming: 'allowed'

| IP type: 'ipv4'

| user: 'none'

| password: 'none'

| number: 'none'

| Rm protocol: 'unknown'

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IPv4 configuration | method: 'unknown'

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IPv6 configuration | method: 'unknown'

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Stats | Duration: '1500'

| Bytes received: '17606'

| Bytes transmitted: '17756'

Scan Network

mmcli -m 0 --3gpp-scan --timeout=300

Found 9 networks:

23420 - 3 UK (umts, forbidden)

23415 - voda UK (lte, forbidden)

23432 - 234 32 (lte, forbidden)

23410 - O2 - UK (lte, forbidden)

23415 - voda UK (umts, forbidden)

23410 - O2 - UK (umts, forbidden)

23420 - 3 UK (lte, forbidden)

23430 - EE (umts, available)

23430 - EE (lte, current)

Start/stop modem connection

mmcli -m 0 --simple-connect="operator-id=23430, apn=broadband" --verbose

[16 Dec 2019, 13:13:13] [Debug] Forcing request to be run asynchronously

[16 Dec 2019, 13:13:13] [Debug] Assuming '0' is the modem index

[16 Dec 2019, 13:13:13] [Debug] ModemManager process found at ':1.1'

[16 Dec 2019, 13:13:13] [Debug] Modem found at '/org/freedesktop/ModemManager1/Modem/0’

[16 Dec 2019, 13:13:13] [Debug] Asynchronously connecting the modem...

successfully connected the modem

mmcli -m 0 --simple-disconnect

Status modem connection

mmcli -m 0 --simple-status

/org/freedesktop/ModemManager1/Modem/0

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Status | state: 'connected’/’registered’

| signal quality: '65' (recent)

| bands: 'u2100, u1900, u17iv, u800, u850, u900, u17ix, eutran-i, eutran-ii, eutran-iii, eutran-iv, eutran-v, eutran-vii, eutran-viii, eutran-ix, eutran-xii, eutran-xiii, eutran-xviii, eutran-xix, eutran-xx, eutran-xli'

| access tech: 'lte'

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3GPP | registration: 'home'

| operator code: '23430'

| operator name: 'EE'

| subscription: 'unknown’

Additional Info

Details of modem/SIM(s) is/are located in:

/etc/NetworkManager/system-connections/’name of LTE connection’

Signal strength

qmicli -d /dev/cdc-wdm0 --device-open-proxy --nas-get-signal-info