Hi Philipp_694,
Thank you for reaching Microsoft Community and I'm sorry to hear about this issue that you are having on your Microsoft Modern Wireless Headset when transferring from one device to another.
May I know how is the headset connected to your Dell laptop? Is it paired directly through Bluetooth or is by using the USB Link that comes with the headset?
How about when transferring from your iPhone 11 to the Dell laptop, do you also get the same issue?
Is this issue present ever since you got the headset, or the headset works fine before then issue just started recently?
For now, kindly try first to update the headset following the steps provided on this page under Update your Microsoft Modern Wireless Headset section: Set up Microsoft Modern Wireless Headset - Microsoft Support.
Kind regards,
Marrion