Originally Posted by 26kick
I just activated an HTC one on Sprint 5 days ago and the call quality is very bad. When "on ear" and speaking to a friend on his land line, he notices a drastic difference in quality relative to my old Motorola XPRT phone. He describes the very same thing we are describing here....buzzing or static underneath the other person's words until they stop talking.
This is even more obvious when using the supplied earbuds.
So I am really talking about two specific noise issues. Mainly, a buzzing or static while the other party is speaking, and to a lesser extent, a sort of general noise under everything.
I've also updated to the latest Sprint HTC one software (released 7/17/13), which said it included HD voice updates, but to no avail.
Best of luck everyone. Any new information please follow up.
I'd suggest the following:
1) Perform a factory reset (back-up data as desired,this erases EVERYTHING).
2) Contact SPRINT.They may be experiencing network issues in your area.They'll probably suggest #1,as this is a normal step in the smartphone troubleshooting process.
Please keep us posted on your results as they develop.