Hello,
Summary
When I boot my device it takes up to 10 minutes before the Internet connection becomes usable. In the logs I see the modem connection was activated successfully but then it disconnects and it tries to reconnect several times without success for minutes, until at some time, it succeed.
With the exact same device and another modem bought some months ago, connection works fine. I used ±50 modems in several devices last year and they worked without any problems, but all the new ones I bought this year have the problem. The only difference I am aware of is I now use the base hat instead of the base shield that has been retired, I don’t know if it has an impact. In some very rare cases the new modem works fine, it seems to be random since I do not change anything between tries.
Device
There are the device elements I use.
- Raspberry Pi 3b+
- Sixfab 3G-4G/LTE Base HAT v1.0.1
- Quectel EC25-E modem
Logs
Below the logs I got in NetworkManager, the program responsible of managing the network interface.
With modem KO
Aug 31 15:38:48 myDeviceName1 NetworkManager[214]: <info> [1630420728.4026] manager: NetworkManager state is now CONNECTED_GLOBAL
Aug 31 15:38:48 myDeviceName1 NetworkManager[214]: <info> [1630420728.4102] modem-manager: ModemManager available
Aug 31 15:38:48 myDeviceName1 NetworkManager[214]: <info> [1630420728.4311] supplicant: wpa_supplicant running
Aug 31 15:38:51 myDeviceName1 NetworkManager[214]: <info> [1630420731.9876] manager: startup complete
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.6964] modem["cdc-wdm0"]: modem state changed, 'disabled' --> 'enabling' (reason: user preference)
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.6995] manager: (cdc-wdm0): new Broadband device (/org/freedesktop/NetworkManager/Devices/4)
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.7059] device (cdc-wdm0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.7091] device (cdc-wdm0): modem state 'enabling'
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.7160] device (cdc-wdm0): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.7205] policy: auto-activating connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.7244] device (cdc-wdm0): Activation: starting connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:39:05 myDeviceName1 NetworkManager[214]: <info> [1630420745.7256] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.3683] modem["cdc-wdm0"]: modem state changed, 'enabling' --> 'enabled' (reason: user-requested)
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.3822] modem["cdc-wdm0"]: modem state changed, 'enabled' --> 'registered' (reason: unknown)
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.4170] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7383] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'connected' (reason: user-requested)
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7492] device (cdc-wdm0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7527] device (cdc-wdm0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7549] modem["cdc-wdm0"]: IPv6 configuration disabled
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7551] modem-broadband[cdc-wdm0]: IPv4 static configuration:
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7564] modem-broadband[cdc-wdm0]: address x.x.x.x/29
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7565] modem-broadband[cdc-wdm0]: gateway x.x.x.x
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7566] modem-broadband[cdc-wdm0]: DNS x.x.x.x
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7566] modem-broadband[cdc-wdm0]: DNS x.x.x.x
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7634] device (cdc-wdm0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7702] device (cdc-wdm0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7728] device (cdc-wdm0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.7998] policy: set 'modem' (wwan0) as default for IPv4 routing and DNS
Aug 31 15:39:06 myDeviceName1 NetworkManager[214]: <info> [1630420746.8067] device (cdc-wdm0): Activation: successful, device activated.
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7029] modem["cdc-wdm0"]: modem state changed, 'connected' --> 'registered' (reason: user-requested)
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7031] device (cdc-wdm0): state change: activated -> failed (reason 'modem-no-carrier', sys-iface-state: 'managed')
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <warn> [1630420803.7186] device (cdc-wdm0): Activation: failed for connection 'modem'
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7234] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7294] policy: auto-activating connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7326] device (cdc-wdm0): Activation: starting connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7333] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.7764] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:03 myDeviceName1 NetworkManager[214]: <info> [1630420803.9847] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.0053] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.0963] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.1155] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2041] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <warn> [1630420804.2055] modem-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): 'CallFailed'
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2057] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <warn> [1630420804.2107] device (cdc-wdm0): Activation: failed for connection 'modem'
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2126] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2161] policy: auto-activating connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2210] device (cdc-wdm0): Activation: starting connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2217] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.2474] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.4504] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.4638] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.5632] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.5747] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.6720] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <warn> [1630420804.6722] modem-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): 'CallFailed'
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.6723] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <warn> [1630420804.6755] device (cdc-wdm0): Activation: failed for connection 'modem'
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.6769] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.6794] policy: auto-activating connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.6870] device (cdc-wdm0): Activation: starting connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.6878] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.7213] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.9191] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:04 myDeviceName1 NetworkManager[214]: <info> [1630420804.9312] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <info> [1630420805.0326] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <info> [1630420805.0520] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <info> [1630420805.1421] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'registered' (reason: user-requested)
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <warn> [1630420805.1426] modem-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): 'CallFailed'
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <info> [1630420805.1427] device (cdc-wdm0): state change: prepare -> failed (reason 'unknown', sys-iface-state: 'managed')
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <warn> [1630420805.1485] device (cdc-wdm0): Activation: failed for connection 'modem'
Aug 31 15:40:05 myDeviceName1 NetworkManager[214]: <info> [1630420805.1504] device (cdc-wdm0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.3606] policy: auto-activating connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.3641] device (cdc-wdm0): Activation: starting connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.3648] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.3844] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5849] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'connected' (reason: user-requested)
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5928] device (cdc-wdm0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5948] device (cdc-wdm0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5960] modem["cdc-wdm0"]: IPv6 configuration disabled
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5962] modem-broadband[cdc-wdm0]: IPv4 static configuration:
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5964] modem-broadband[cdc-wdm0]: address x.x.x.x/26
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5964] modem-broadband[cdc-wdm0]: gateway x.x.x.x
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5965] modem-broadband[cdc-wdm0]: DNS x.x.x.x
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.5965] modem-broadband[cdc-wdm0]: DNS x.x.x.x
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.6011] device (cdc-wdm0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.6042] device (cdc-wdm0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.6053] device (cdc-wdm0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.6211] policy: set 'modem' (wwan0) as default for IPv4 routing and DNS
Aug 31 15:45:05 myDeviceName1 NetworkManager[214]: <info> [1630421105.6229] device (cdc-wdm0): Activation: successful, device activated.
With modem OK
Aug 31 14:56:32 myDeviceName1 NetworkManager[199]: <info> [1630418192.2347] manager: NetworkManager state is now CONNECTED_GLOBAL
Aug 31 14:56:32 myDeviceName1 NetworkManager[199]: <info> [1630418192.2819] modem-manager: ModemManager available
Aug 31 14:56:32 myDeviceName1 NetworkManager[199]: <info> [1630418192.3325] supplicant: wpa_supplicant running
Aug 31 14:56:35 myDeviceName1 NetworkManager[199]: <info> [1630418195.8158] manager: startup complete
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4346] modem["cdc-wdm0"]: modem state changed, 'disabled' --> 'enabling' (reason: user preference)
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4358] manager: (cdc-wdm0): new Broadband device (/org/freedesktop/NetworkManager/Devices/4)
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4384] device (cdc-wdm0): state change: unmanaged -> unavailable (reason 'managed', sys-iface-state: 'external')
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4409] device (cdc-wdm0): modem state 'enabling'
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4452] device (cdc-wdm0): state change: unavailable -> disconnected (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4478] policy: auto-activating connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4527] device (cdc-wdm0): Activation: starting connection 'modem' (ad91151b-1c9d-4b53-bc29-552b24855d2f)
Aug 31 14:56:49 myDeviceName1 NetworkManager[199]: <info> [1630418209.4538] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.1237] modem["cdc-wdm0"]: modem state changed, 'enabling' --> 'enabled' (reason: user-requested)
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.1355] modem["cdc-wdm0"]: modem state changed, 'enabled' --> 'registered' (reason: unknown)
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.1698] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5232] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'connected' (reason: user-requested)
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5333] device (cdc-wdm0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5368] device (cdc-wdm0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5390] modem["cdc-wdm0"]: IPv6 configuration disabled
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5392] modem-broadband[cdc-wdm0]: IPv4 static configuration:
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5393] modem-broadband[cdc-wdm0]: address x.x.x.x/30
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5394] modem-broadband[cdc-wdm0]: gateway x.x.x.x
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5395] modem-broadband[cdc-wdm0]: DNS x.x.x.x
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5395] modem-broadband[cdc-wdm0]: DNS x.x.x.x
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5451] device (cdc-wdm0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5506] device (cdc-wdm0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5525] device (cdc-wdm0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5704] policy: set 'modem' (wwan0) as default for IPv4 routing and DNS
Aug 31 14:56:50 myDeviceName1 NetworkManager[199]: <info> [1630418210.5740] device (cdc-wdm0): Activation: successful, device activated.
Modems infos
Modem KO
AT+CPIN? READY
AT+QGMR EC25EFAR06A08M4G_01.007.01.007
AT+CPAS 0
AT+CFUN? 1
AT+COPS? 0,0,"F-Bouygues Telecom KPN",7
AT+QCFG="band" "band",0xd3,0x1a0000800d5,0x0
AT+QCFG="nwscanseq" "nwscanseq",0403010205
AT+QCFG="nwscanmode" "nwscanmode",0
AT+CGDCONT? 1,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
AT+CREG? 0,5
AT+CSQ 31,99
AT+QCSQ "LTE",42,-74,159,-11
AT+QNWINFO "FDD LTE","20820","LTE BAND 3",1850
AT+CGATT? 1
AT+QCFG="usbnet" 0
Modem OK
AT+CPIN? READY
AT+QGMR EC25EFAR06A08M4G_01.007.01.007
AT+CPAS 0
AT+CFUN? 1
AT+COPS? 0,0,"F-Bouygues Telecom KPN",7
AT+QCFG="band" "band",0xd3,0x1a0000800d5,0x0
AT+QCFG="nwscanseq" "nwscanseq",0403010205
AT+QCFG="nwscanmode" "nwscanmode",0
AT+CGDCONT? 1,"IPV4V6","","0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0",0,0,0,0
AT+CREG? 0,5
AT+CSQ 31,99
AT+QCSQ "LTE",34,-58,178,-8
AT+QNWINFO "FDD LTE","20820","LTE BAND 20",6200
AT+CGATT? 1
AT+QCFG="usbnet" 0
Thanks in advance for your help.