[gla]

The modem has only sim card slot. I use ModemManager with it and this was my initial problem output from ModemManager

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...device not supported by any plugin...

so I tried fixing my problem by whitelisting the modem by creating the file /lib/udev/rules.d/78-mm-whitelist-internal-modem.rules whose contents include

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ACTION!="add|change|move", GOTO="mm_whitelist_internal_modem_end"
ATTRS{idVendor}=="1bbb", ATTRS{idProduct}=="022e", ENV{ID_MM_DEVICE_PROCESS}="1"
LABEL="mm_whitelist_internal_modem_end"

I then did this

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udevadm control -R
udevadm trigger

That did not make the modem work so I rebooted my my machine and it still did not work , I then I tried this

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modprobe option
echo 1bbb 022e > /sys/bus/usb-serial/drivers/option1/new_id

That is the final idea I had to solve my problem but the modem is still not working. Lsusb output is

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Bus 001 Device 005: ID 1bbb:022e T & A Mobile Phones

/sys/kernel/debug/usb/devices output is

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T:  Bus=01 Lev=01 Prnt=01 Port=02 Cnt=01 Dev#=  5 Spd=480  MxCh= 0
D:  Ver= 1.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1bbb ProdID=022e Rev= 2.02
C:  #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=
E:  Ad=85(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=06(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms

dmesg output is

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[ 2240.701973] usb 1-3: new high-speed USB device number 5 using ehci-pci
[ 2240.848954] usb 1-3: config 1 interface 0 altsetting 0 bulk endpoint 0x85 has invalid maxpacket 64
[ 2240.848960] usb 1-3: config 1 interface 0 altsetting 0 bulk endpoint 0x6 has invalid maxpacket 64
[ 2240.848967] usb 1-3: New USB device found, idVendor=1bbb, idProduct=022e, bcdDevice= 2.02
[ 2240.848971] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2240.849680] option 1-3:1.0: GSM modem (1-port) converter detected
[ 2240.854425] usb 1-3: GSM modem (1-port) converter now attached to ttyUSB0
[ 2436.005163] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0

ModemManager status is

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(tty/ttyUSB0): released by device '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-3
(tty/ttyUSB1): released by device '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-3'
(tty/ttyUSB2): released by device '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-3'
device /sys/devices/pci0000:00/0000:00:1a.7/usb1/1-3] creating modem with plugin 'Generic' and '1' ports
Could not grab port (tty/ttyUSB0): 'Cannot add port 'tty/ttyUSB0', unhandled serial type'
Couldn't create modem for device '/sys/devices/pci0000:00/0000:00:1a.7/usb1/1-3': Failed to find primary AT port

I'm using Parabola GNU/Linux-libre. Kernel version 5.2.5-gnu-1

[LOM]

When a modem has just one,single, interface then that interface can not be used for much else than debugging or firmware download, your attempt at supporting your modem by adding udev rules and forcing the option driver onto it won't change that.
An X602D should have the pid 022c with 4-5 interfaces, not 022e. If you unplug and replug the modem and then check in the end of your dmesg log showing the detection of the modem after replug then is it initially detected there as 1bbb:022e ?
Is there any indication there that it is being switched from another pid into pid 022e?

[gla]

there's no indication of pid being changed

[LOM]

Well then I can unfortunately not help you, your X602D is not in a usable mode so you'd better ask the seller to replace it.

[gla]

well, thanks for looking into my issue