AT&T recently agreed to purchase the 3.45 GHz spectrum from EchoStar and was able to deploy the new spectrum in 23,000 AT&T cell sites in a matter of weeks. The company will use this spectrum to beef up 5G speeds and to also power its FWA cellular home broadband product it markets as AT&T Air. While the spectrum sale still needs to be officially recognized by the FCC, the agreement between EchoStar and AT&T allows for an immediate lease of the spectrum to AT&T.
Anybody following the cellular industry knows that AT&T’s 5G speeds have significantly trailed the speeds being delivered by Verizon and T-Mobile. This should also strengthen AT&T’s recent decision to seriously market its FWA product. AT&T was several years behind Verizon and T-Mobile in marketing wireless home broadband, and just started to seriously market the product in 2024. AT&T had its best quarter of new FWA sales in the third quarter and added 270,000 new customers to bring it to almost 1.3 million FWA customers.
The most interesting thing about this upgrade was the short time required for the upgrade, with 23,000 cell sites upgraded in weeks. Just a decade ago, an upgrade like this would have taken fleets of technicians visiting each cell site, and the update would have normally taken more than a year. I recall stories about the challenges AT&T and the other carriers faced in implementing the first wave of 4G LTE. The LTE upgrades weren’t a one-time event, and every six months to a year there would be new 4G improvements.
AT&T was able to make the upgrade quickly today for several reasons. First, AT&T already owns 3.45 GHz spectrum in some markets, so it has already built the spectrum into its handsets and headends.
But the real news is that AT&T has upgraded cell sites over time to make it easy to make software upgrades remotely. Starting in 2017, AT&T used the required upgrades needed to implement FirstNet, the nationwide first responder network, as an opportunity to also update hardware and software at cell sites for its own purposes. Upgrades were made to hardware and software to prepare cell sites for the next decade of likely upgrades.
It’s easy to think that a company like AT&T probably has a relatively generic configuration at cell sites, but that was never the story historically. AT&T and the other cellular carriers deploy different spectrum in markets depending on the cell licenses they hold in each region. The company operates a range of sizes of cell sites, from tiny rural ones to monster sites in major metropolitan areas. This now also includes a number of microcell sites in markets that are used to serve a large building or a particularly busy neighborhood. AT&T cell sites also vary widely by the age and specific type of electronics at each cell site. The complexity of the historical cellular network makes it easy to understand why it was so challenging to implement a nationwide upgrade.
But AT&T clearly invested a lot in software that can be triggered quickly for a large number of cell sites. This AT&T announcement is good for AT&T, which can instantly realize the benefits of a change like adding new spectrum. It’s good for customers, who see faster speeds immediately. It’s not so good for the many folks who used to travel and make this kind of upgrade.
I’m an AT&T cellular customer, and I took a cellular speed test as I wrote this blog. My download speed is almost 100 Mbps faster than some tests I had taken in the spring. That increase may not come from this upgrade, but it might.










