I have a strange problem. I am quite familiar with computer electronics and I also setup my router and assemble my own computer.
My issue can be divided into two parts:
Part 1) With the Watch4 Classic WiFi on or off, whenever I charge it, my router in the same room reboots automatically
Part 2) When manually trying to connect to the 2.4 GHz WiFi on the watch, my router reboots
The current solution not to crash/reboot the router is to shut off WiFi and not to charge the Watch4 Classic that often.
Do you guys have similar problems?
My WiFi (2.4 and 5 GHz) has WPA2/WPA3 Personal security standard and 20/40 MHz of channel width. My router is DIR 882 (WiFi 5) and there are no further firmware for it.
What I will do is to connect the smartwatch to 5 GHz or change the channel of the 2.4 GHz. I will keep you posted.
Currently it seems to work. I have connected my watch to the 5GHz band and also replaced a USB C to USB A charger cable which had a broker isolation. Maybe the second point was the main reason. I am still testing.