T-Mobile has just doubled its LTE-Advanced capacity, reaching more than 900 markets across the US. In half of those new markets, 4 x 4 carrier aggregation has been activated as well. This means end users with Gigabit LTE phones are seeing around double the speed as before. One user submitted a photo of a phone running at over 670Mbps of download speeds.
Its important to realize that LTE-Advanced is NOT 5G though. LTE-Advanced still uses the same frequencies as LTE, but supports carrier aggregation of multiple bands. This LTE-A rollout is the next step to 5G for T-Mobile with 2019 to 2020 as a scheduled rollout date for 5G. Read more.