Gregory's Server@cas > #Samsung j3 (j3xnlte) - some spreadtrum SoC - Only if you can find UART for me
perhaps the carkit cable from https://wiki.postmarketos.org/wiki/Serial_debugging:Cable_schematics would work? this device uses the same muic as a few msm8916 devices which should have uart over microusb as seen in this table: https://wiki.postmarketos.org/wiki/Micro-USB_Interface_Controller
@undefined i have this a go before but had no luck, I'm willing to give another try if someone is really eager (although tbh it might be easier to just send them the phone...)