I use my phone (a OnePlus 3 running the stock ROM and Android 7.1.1) as my primary internet connection. This means that I make heavy use of wireless tethering, especially for work. The trouble is, whenever my phone rings, regardless of whether I answer it, wireless tethering gets disabled. If I use USB tethering, I have no such problem, but wireless is much more convenient.
I previously came across this answer, but it doesn't apply to me. I've never had a phone which was unable to simultaneously use phone and data. When I'm on a call, I can enable wireless tethering with no problem. It just gets disabled for no good reason whenever I receive a call.
Note that that the issue is not the connection technology (WCDMA, VoLTE, carrier support, etc.) This is absolutely impossible, since the fact mentioned above that I can manually re-enable tethering while on a call, coupled with the fact that I have full access to data while on a call, disproves any such theories. This is why I started a new thread instead of using the old one I linked to above.
Is there any way to prevent wireless from being disabled? Failing my first question, I would also accept a method to make my phone completely ignore incoming calls during specified times so that they couldn't disable tethering, so long as I kept internet access and text messaging.