Guessing here... but just like when 4G first rolled out, it wasn’t technically 4G. They rolled out LTE (Long Term Evolution) which initially didn’t qualify as 4G until they could expand and develop it. They referred to it as 4G but that was only marketing.  Now you commonly see 4G LTE... because it was finally 4G by definition.  I think the same thing is happening here. 5G uses a combination of low-band (1G and 2G) mid-band (3G and 4G) and then high frequency to “skip” between high, mid, low to provide the best most stable connection. High frequency signals are very easily disrupted so mid band will be paramount to 5G success. Currently the only high frequencies that they are using in the 5G spectrum are between 24-28GHz because they’re still trying to clear out the high frequencies currently used for other purposes.  24GHz is the low end of the millimeter wave spectrum that is dangerous, but it’s not nearly as bad as the 60GHz spectrum that is what causes the symptoms that we see in the COVID-19 patients... So while it’s technically 5G, it’s not the 10GB throughput speed that is true 5th Generation wireless communications.  It’s a stepping stone to true 5G, but it’s more accurately described as marketing.