In following the OpenWRT steps I’m seeing all the pieces loaded.
root@GL-B1300:~# lsmod|grep hcd
ehci_hcd               57344  1 ehci_platform
ohci_hcd               40960  1 ohci_platform
uhci_hcd               40960  0
xhci_hcd              126976  2 xhci_plat_hcd
xhci_plat_hcd          16384  0
 
            
              
           
          
            
            
              I do see “kmod-usb-ohci” and “kmod-usb-uhci” both here. The OpenWRT guide shows the ohci as an alternative, probably shouldn’t be installed together.
Besides that, it looks like you got all drivers yup
             
            
              
           
          
            
            
              
Some devices (e.g. Asus WL-500g router, brcm47xx) additionally need the kmod-usb2 module (even though they only have an USB 1.1 controller)
 
Some devices (e.g. NLSU2, LinkSys WRT54G3GV2) additionally need the following packages:
 
 
opkg install kmod-usb-ohci-pci
Saw this in the notes, these 2 are not installed on your device. If this isn’t it I’m out of ideas 
             
            
              
           
          
            
              
                alzhao  
              
                  
                    July 25, 2022,  3:17am
                   
                  24 
               
             
            
              The difference between B1300 and AR750s is USB3.0 vs USB2.0.
Can you give me these log when you plug S8 to B1300
logread
ifconfig -a
 
            
              
           
          
            
            
              
My previous post here w/logread for the S8  B1300 won't tether a Samsung S8 - #5 by wkearney99 
Good to know the USB3 vs USB2 difference.  Both the S8 and the S22 use a USB-C connector, but I don’t know which version they each support.
             
            
              
           
          
            
              
                alzhao  
              
                  
                    July 26, 2022,  1:38am
                   
                  26 
               
             
            
              Sun Jul 24 05:20:07 2022 kern.info kernel: [  811.862495] usb 1-1: USB disconnect, device number 4
Sun Jul 24 05:20:08 2022 kern.info kernel: [  812.278593] usb 1-1: new high-speed USB device number 5 using xhci-hcd
So just seems the USB does not work correct.
             
            
              
           
          
            
            
              
Did you miss the part where this cable and this phone is able to tether without a problem on an AR-750S?
Yes, as a phone the S8 is an older model, thus using it as a tethering modem.
             
            
              
           
          
            
              
                alzhao  
              
                  
                    July 28, 2022,  1:03pm
                   
                  28 
               
             
            
              
No I didn’t miss. I just cannot find a S8 and test.
AR750S is USB2.0 and MT1300 is USB3.0 which I think it affected something
             
            
              
           
          
            
              
                Alpha  
              
                  
                    July 28, 2022, 10:55pm
                   
                  29 
               
             
            
              It’s not just the Samsung S8, I’m using a Quectel RM502 on a USB adapter and the B1300 will not recognize it either. The GLinet firmware has a glitch in the USB config file. It needs to be fixed ASAP!
             
            
              1 Like