you can use 4G router device. and setup 4G card on the router.
Can you elaborate more on those parts?Connect each Android phone to the tower PC via USB cables.
Enable USB tethering on each phone to share its mobile data connection with the PC.
Set Up Proxy Software on Tower PC:
Choose a suitable proxy software such as Squid or Dante.
Install and configure the selected proxy software to use the connected Android phones as the outgoing network interface.
Test and Monitor:
The easiest way would be using one of couple available services that takes care of everything to convert phone to proxy, including rotations, authentication etc. Don't want to shill them here, but a quick google search for '4g proxy from android' or something like that will find themCan I create a 4g proxy using an old tower pc and some old android phones? Is there any tutorial that teach this?
I follow the thread
I follow the thread