Not able to use phones for voice calls

Hi friend, 

Thanks for choosing EarFun. Sorry for the inconvenience caused. 

As for the issue you encountered, we kindly suggest you reboot your phone and then reset and reconnect the earbuds per the updated steps:

Step 1. Delete the old connection from the Bluetooth device.

Step 2. Place both earbuds into the charging case.

Step 3. Keep the charging case open, then press and hold the charging case button for at least 8 seconds until the LED indicator on both earbuds flash in purple.

Step 4. Search and reconnect “EarFun Air S".

We also suggest you try to connect the earbuds to other models of devices and call different people to test whether it is still the same situation.  Please make sure the input device and output device of your phone are the earbuds while making calls. 

If the above methods still could not solve your issues, please email our customer service team via service@myearfun.com or submit the warranty ticket on our official website: https://www.myearfun.com/process-warranty. EarFun provides an 18-month warranty for every product. Your satisfaction is always greatly important to us.

Sincerely,

EarFun Customer Service Team

I have the same problem with my Earfun Pro with iPhone 12 Max. 

It looks like this is a glitch. This is sad since I work a lot and specifically bought these to be able to work without having to us my overhead earphones.