Sudden terrible (and strange) data speeds at home, TMo Tells me the towers are "fine"

BBB escalation will get you a bit more than the typical locals, but I have had your message of “we can't guarantee coverage in all areas” often.

I’d almost recommend taking a ‘drive by’ the tower (½ mile away?) and taking a ‘test’.

and similarly network readings.

I did mention above that it took me a CPUC written complaint to get T-Mobile to ‘fix’ the 0.3Mbps 5G service, along with a BBB escalation.  8 months .

Then, after publishing the written response, it was fixed in 1 month.  Press them on the issue - tell them you have full bars, but effectively unusable service.  5G 'should be' +100Mbps (according to past reps).  1Mbps at ½ mile is pretty bad, especially with good power level, and usable SINR.

Why I mention microwave … I'm in a suburban area, the local tower here is microwave.  A 'bump' (wind, or other) can move these a bit out of alignment - or … something comes in between.  For the amount of spectrum available and signal, your results (2 weeks ago) were decent.