12-03-2020, 02:57 PM
If you can read schematics, you can take a look at the phone schematics, the GPS component is part of the modem. I tried opening up the schematics of the revision that I have and had no idea what I was looking at beyond the basic block diagram and the power tree. 
All I could gather is that the modem and WiFi modules are powered by the battery directly and bypass the AXP803 chip, which powers all the other components and takes care of battery charging. The fact that the modem is connected via USB (which means there's nobody to listen to it since the CPU would be powered down) doesn't make a difference I don't think, I imagine that as long it gets power it can still connect to a satellite and report your location (the Quectel modem's firmware is a full Linux distro!).
All I could gather is that the modem and WiFi modules are powered by the battery directly and bypass the AXP803 chip, which powers all the other components and takes care of battery charging. The fact that the modem is connected via USB (which means there's nobody to listen to it since the CPU would be powered down) doesn't make a difference I don't think, I imagine that as long it gets power it can still connect to a satellite and report your location (the Quectel modem's firmware is a full Linux distro!).
