5G Internet Service Oversold & Over-rated

Replaced AT&T with T-Mobile 5g internet.  What a zoo!  Replaced the 1st Nokia gateway with another because of dropouts of service.  2nd router is no better.  I have had 7 "throttle backs" of service within 3 weeks.  Service reps are nice but cannot solve the inherent problem of T-Mobile overselling their coverage with cell towers not able to keep up with demand and letting customers suffer the periodic frustration. I am waiting for fiber option from a more reliable carrier.