T-Mobile Chief Technology Officer Neville Ray is doubtful of Verizon's 5G network expansion plans, tweeting that he wants to see a coverage map. His comments follow Verizon announcing earlier Wednesday the , in addition to already being .
"What is Verizon's 'secret' 5G plan to expand 5G coverage beyond the limits of mmWave?!" Ray tweeted, referring to the millimeter-wave high-band spectrum being used by Verizon for its 5G network.
"Verizon says they will have a 'multi-spectrum strategy.' So they don't have one now... when will they have one? Tomorrow?!" he added in another tweet.
was OK'd this week, giving it access to multiple 5G spectrum bands. Spectrum, or radio airwaves, make the wireless system work -- and by adding spectrum in several bands, capacity and speeds will keep increasing.
Ray expressed doubts Verizon will be able to deliver gigabit-speed 5G with its current spectrum strategy.
"Verizon says their 5G network will continue to have 'the speeds we're seeing now,'" he also tweeted Wednesday. "Where is this 'secret' spectrum coming from that will deliver Gigabit speeds… AND broad coverage?!"
Verizon declined to comment.
First published at 5:07 p.m. PT on July 31.
Updated on Aug. 1 at 8:26 a.m. PT: Verizon declined to comment.