📢 Dual SIM + Bluetooth Calling Issue

Hi everyone,

I’m facing a strange problem on my phone when using both SIM cards + Bluetooth earbuds.

👉 Here’s what happens:

At the start of the call, audio works fine.

After a few minutes, the sound becomes distorted/annoying/robotic only in phone calls.

If I switch audio from Bluetooth → Phone Speaker → back to Bluetooth, it works again for some time.

This issue happens only during phone calls (music and videos are fine).

When I use only one SIM, the problem doesn’t happen.

So it seems like a dual SIM + Bluetooth calling bug.

Has anyone else faced this? Any permanent solution or setting change (VoLTE/VoWiFi, SIM priority, etc.) that worked for you?

Thanks in advance 🙏

PriyanshuKumarGupta yes same problem i face recently on Bluetooth calling.

Bluetooth calling issue on CMF Nothing Phone 2

Pro (Nothing OS 3.2):

When using Nothing Earbuds, voice breaks or becomes robotic after 2-3 minutes during normal calls.

Music playback works perfectly and the same earbuds work fine on other phones.

Issue appears after Nothing OS 3.2 update seems related to LC3 / LE Audio codec switching.

Not with video calling, but my dual-sim randomly will not show my expandable SD storage. Only fix is reseating the sim tray or rebooting the device.

Anybody found any solution for this issue. Face this in my cmf phone 1.

I am also facing the same issue.