The other nine cities will be announced in the coming months, AT&T said.
AT&T says it's interested in learning how 5G will impact businesses.
While AT&T senior vice president Igal Elbaz wrote in a statement that the company is progressing its 5G network "much sooner than most people thought possible", folks shouldn't hold their breath for a full-scale 5G overhaul from the company this year.
Dallas, Atlanta and Waco, Texas, are the first cities where the technology is rolling out. Millimeter-wave spectrum only works in nearby, mostly line-of-sight applications, which means you'll have to be standing close to a 5G access point to get a signal. The experts say the next generation 5G network technology is about 10 times faster than 4G.
While AT&T and Verizon have made some strides with 5G, experts project these networks will launch in 2020.
After promising earlier this year that it would be among the first domestic wireless providers to begin rolling out its next-generation 5G network, AT&T this week officially announced the first three USA cities in line to be blanketed with the carrier's multi-gigabit 5G network by the end of 2018. We know three of those dozen 5G markets: Dallas, Waco, and Atlanta. The standards for 5G have been agreed by the telecoms industry, chip manufacturers have announced when their modems will become available, and the networks are bickering about whose ad campaign is working the best.
As for AT&T's competitors - Sprint's CEO said the company wants to launch its 5G network in the first half of 2019. That trailblazing move makes the company the only USA carrier to roll out plans for the high-speed technology in 2018, according to its announcement. In fact, its 5G evolution features have been live on T-Mobile for a few years.
Supreme Court verdict on Nawaz Sharif's disqualification as PML-N president
Sharif was disqualified as the Prime Minister after the Supreme Court convicted him in the Panama Papers case past year . Sharif and some of his family members are facing charges relating to their ownership of posh properties in London.
Russian team in shock over curling doping scandal
That's why the WADA banned its use, which resulted in Maria Sharapova's 15-month ban from tennis competition. A delegation spokesman says the athlete tested negative before the Olympics .
Trump Goes After Oprah on Twitter
Oprah sparked speculation that she might run for office following her rousing speech on equality at January's Golden Globe awards. In 1988, Trump told Oprah he probably would never run, adding: "I think I'd win - I tell you what, I wouldn't go into lose".