hello all,
hope I have posted in the right place.My device is Xiaomi miwifi mini and I am running a custom built OpenWRT chaos calmer image built using the build tools available in git repo.
I have a ZTE MF710M USB modem
Output of 'lsusb'
Bus 001 Device 003: ID 19d2:1595 ZTE WCDMA Technologies MSM
it doesnt do modswitching automatically and I have this new usbmode instead of usb_modswitch.
So I installed sdparm and Issued sdparm --command="eject" /dev/sr0 (Also tried using sg0 and got the same output)
here is the output after that
/dev/sr0: HSPA      USB SCSI CD-ROM   2.31  [cd/dvd]
[ 1386.540000] usb 1-1: USB disconnect, device number 3
root@OpenWrt:/# [ 1387.350000] usb 1-1: new high-speed USB device number 4 using ehci-platform
[ 1387.500000] cdc_ether 1-1:1.0 usb0: register 'cdc_ether' at usb-101c0000.ehci-1, CDC Ethernet Device, 02:00:ff:aa:aa:aa
[ 1387.530000] option 1-1:1.2: GSM modem (1-port) converter detected
[ 1387.530000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 1387.540000] option 1-1:1.3: GSM modem (1-port) converter detected
[ 1387.550000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 1387.560000] option 1-1:1.4: GSM modem (1-port) converter detected
[ 1387.560000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 1387.570000] option 1-1:1.5: GSM modem (1-port) converter detected
[ 1387.580000] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
[ 1387.600000] usb-storage 1-1:1.6: USB Mass Storage device detected
[ 1387.600000] scsi host6: usb-storage 1-1:1.6
[ 1388.610000] scsi 6:0:0:0: CD-ROM            HSPA     USB SCSI CD-ROM  2.31 PQ: 0 ANSI: 0 CCS
[ 1388.630000] sr 6:0:0:0: [sr0] scsi3-mmc drive: 0x/0x caddy
[ 1388.630000] sr 6:0:0:0: Attached scsi generic sg0 type 5
[ 1388.640000] scsi 6:0:0:1: Direct-Access     HSPA     MMC Storage      2.31 PQ: 0 ANSI: 0 CCS
[ 1388.650000] sd 6:0:0:1: Attached scsi generic sg1 type 0
[ 1388.680000] sd 6:0:0:1: [sda] Attached SCSI removable disk
Now 'lsusb' says
Bus 001 Device 004: ID 19d2:1592 ZTE WCDMA Technologies MSM
Then I switched to luci and added a new interface for 3G with /dev/ttyUSB0 and apn and dialing number ( *99#). This worked for me on a Huawei Modem ( lsusb  Bus 002 Device 004: ID 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem)
But here,it doesnt work at all. I googled around and some said such modems register usb ethernet drivers so it should be accessed by assigning ip addresses and then wget/curl commands such as
curl --header "Referer: url=http://192.168.0.1/index.html" http://192.168.0.1/index.html\" http://192.168.0.1/goform
/goform_set_cmd_process?goformId=CONNECT_NETWORK
(from archwiki ZTE MF823) but that didnt do anything either.
So, how do I get it working?
Thanks in advance

Install these packages
usb-modeswitch kmod-usb-net-rndis kmod-usb-net-cdc-ether kmod-usb-net
Its CDC USB Ethernet as you can see in log CDC Ethernet Device, 02:00:ff:aa:aa:aa
you have to create a new wan connection in luci, in physical settings select your new CDC interface, probably as eth2
Done!

Thanks for replying!
All these packages are installed already.
I just managed to get it working Had to enter AT+CFUN=0 and then AT+CFUN=1 to activate the radio

Hi can someone tell me how they got this working

did you use the
curl --header "Referer: url=http://192.168.0.1/index.html" http://192.168.0.1/index.html\" http://192.168.0.1/goform
/goform_set_cmd_process?goformId=CONNECT_NETWORK

line?

Thank you
Dan