
Xiaomi 14T Pro users are experiencing issues with their phone speaker cutting out during phone calls. The problem is limited to a few countries, but it seems the company is now addressing the bug. It’s a gradual process and might take time to arrive for all affected users.
Answering calls on the Xiaomi 14T Pro has been an issue. It’s a bug with Android 16, which is expected, given the build is for beta testers. There are also going to be problems like this until it becomes stable. Fortunately, a fix has since been released, and you should check your Updater app for it.
Details of the Xiaomi 14T Pro Speakerphone call Audio bug fix

Meanwhile, the bug started after an upgrade to Android 16 with HyperOS 2. It means only Xiaomi 14T Pro users who upgraded their device to the latest OS are having this issue with their phone’s speaker. We will recommend ignoring the following builds listed below.
Affected Version:
- OS2.0.221.0.WNNEUXM(Discontinued), OS2.0.220.0.WNNMIXM(Discontinued).
We understand Xiaomi has since discontinued these builds, with a new release already initiated. You should check for a new update if you are having issues with your speaker during calls.
source: Xiaomi