: Allowing tools to communicate with the phone's internal software. Modem Functions : Using your phone as a tethered internet modem. Where to Find the Official Drivers

Once the driver is installed, you can use professional service tools. Here is a quick primer:

is a popular utility that includes most required serial port components. Step-by-Step Installation Guide

✅ Try a different USB cable or PC port. Avoid USB 3.0 ports if possible (use USB 2.0).