Ok, probably stupid question,

Ok, probably stupid question, but how can I make a BT call with the KW88? Have working BT connection.
Didn’t even get a notice of incoming call, only afterwards that I missed a call.

You can’t. It doesn’t support it.

Try this :
https://blog.mysms.com/quick-tip-mirror-your-calls-from-one-phone-to-another-phone.html

You can’t make or answer a BT call, but if you have a sim card with a independent number you can forward and answer your calls on the watch.

@Barefoot_Everywhere
Hmmm - seems to defeat the point a little ?

Can’t you use the SWApp Link app?

Interesting, I’ll have a look at it later.

If you can’t find the app let me know. I have the apk

@BigKenNC are you saying you can consistently answer calls to your phone using your watch with SwApp link ?