Massive fluctuation of internet speed

I have everything you mention and latest editions that's why I sometimes can reach speed at 350, without the 4 lead WAVEFORM antenna and the TMobile TMO-G4SE modem with 4 external antenna connectivity, without Waveform the TMobile modem best use would properly be as a paper press!

TMobile needs to explain normal deadly people like me about why we have to accept this huge variation I their signal strength, does it blow in the wind like sound waves? It truly looks like!

All our 5G phones are synchronized at speed test going up and down like a skyscraper elevator, some days I have to be just under the cell tower to be sure not to loose important phone call conversations! Like sorry sorry hold on I'm driving closer to our nearest cell tower!!!!

I guess, in my case, the best will be to get a phone from each of the cellphone/data providers to monitor which company, over time, provide the most stable phone and data connections to the world around me, I do not demand super blasting speeds, but I do demand SIGNAL STRENGTH STABILITY, with a fair Ping response time below 100, in this writing moment my Samsung ultra 23s without Waveform antenna wifi connection @ 5G UC, Ping ms are 248 @ upload 0.02 download 9.61. and with the Waveform Ping ms 486 @ 0.99 upload and 62.5 download. So yes, the Waveform help to keep me connected at higher speed but with a poor Ping response!

Imagine I'm only 2 miles away from nearest rual Tower, if it is necessary to setup towers with lesser distances to get a descent signal like here in flat hurricane razored Florida then I think this whole 5G technologies has failed big time!