Intermittent dropping of network connection. Wifi is fine.

Have had this problem for over two years.   Internet connection just drops.  I have to force a disconnect and reconnect to get internet service.  Cross platform (PC, iPhone, etc.).  Have had device replaced, wiring replaced, and per technician moved to another card in their switch.   Gets better for a bit and since I dread starting this process again I just ignore it for a while, then as it is now gets so frequent that I am aggravated enough to start trying to get it resolved as now.   Am looking into alternative providers.   Cable here is as bad or worse.  If T-Mobile offered unlimited data here I would already be gone.   Anyone have any ideas?   Wifi is not the issue, connections stay up just no internet past the access point.