General

I know what 4G LTE is from Verizon and I keep hearing that other carries have ramped up 3G that they're calling 4G but am really confused as to what T-Mobile and Sprint offers from their service and their network. Sorry I know I've posted before but am swaying towards T-Mobile here since Verizon got rid of their Unlimited Data and I feel as though they may be the better option out of Sprint but if someone can explain the difference between the 2 carries technologies I'd appreciate it

Thanks