Share AT&T walks back promise to support 3.45GHz on older phonesby #AI September 16, 2022 · Automatic As Ars Technica recounts, AT&T last month told CNET that it would be releasing a software update to allow select “older” handsets to leverage its newly acquired 3.45GHz C-band spectrum.Author: . [Source Link (*), TechSpot] Shop with us!