From KDE UserBase Wiki

KDEConnect is still missing a very useful feature, luckily already implemented in GSConnect: Dial-up. When the PC user clicks on a "tel:" hyperlink, and this link type is associated with " KDEConnect", then it should, like GSConnect, transfer the phone number mentioned in the link to the smartphone dial-up application, display it and stay waiting for the push on the (green) dial-up button. I hope that, because this feature exists already in GSConnect, copying the code into KDEConnect would not be a big deal and can hence be quickly implemented. PS. I'm not sure this is the right place to discuss this. Please advice.

This is not the right place to discuss - chances that a KDEConnect developer will notice a feature request here is not great. The best way is probably to make a feature request on bugzilla. Claus chr (talk) 08:22, 31 May 2023 (UTC)