AT&T today said it plans to release a second 5G smartphone during the latter half of 2019. Samsung will make this new device for AT&T and, unlike the first 5G phone from AT&T, this second one will support 5G in both mmWave and sub-6 GHz bands. AT&T says it is still on track to launch mmWave mobile 5G before the end of 2018. It has been installing software upgradeable sub-6 GHz radios throughout 2018 and will continue to do so in 2019. AT&T didn't say when it intends to light up sub-6 GHz spectrum with 5G service. AT&T's mobile 5G network will only be available in a handful of cities to start and will grow over time.


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