Not possible to make phonecalls with my mobile phonenumber, for admin reasons

Hi @fmurodov, welcome! If you can call us (0800-0402) with another phone, that's the best solution. My colleagues can check if there's anything wrong and help you fix the problem. Maybe something went wrong with the porting to KPN. If that's not possible for you, then going to a KPN shop is a great idea. If there is anything we can do, please let us know. 

@Marcia van KPN Thanks for the advice. I was at the KPN shop, and they couldn't find anything wrong with my subscription. They also advised me to call the customer service number, but I need a Dutch-speaking person to help me navigate through the IVR, so will call once i find one 😀

If you want me to take a look, please update your forum profile with your 06-number, adress and evt. customer number and let me know!

That would be great. 
Already filled in all the information 

Yes, thanks! I see nothing that concerns me, so far. Is VoLTE (LTE/4G) switched on on your iPhone- → ‘settings', ‘mobile data’, ‘mobile data options’, ‘voice and data’?

Have you allready visited a specialised Apple store?

As an Apple Store. Or in Rotterdam an AMAC store?

I think there must be a problem with de “telephone” app. Maybe a setting.

It's a pitty you don't have a physical sim. Otherwise i would have advised you to test in another phone….

@Marcia van KPN @PeterG I don't have the VoLTE (LTE/4G) option under 'voice and data' for KPN eSIM, but it's available for the second eSIM, which works fine. There are only options for 5G Auto, 5G on, and 4G for KPN eSIM. I tried switching to 4G, but it didn't help.

I regenerated the eSIM on another phone (iPhone 14), but the same situation persists as in the primary phone (15 Pro).

So, I'm considering requesting a physical SIM card to see if it helps.

But i don’t think that the Apple store will help me with this. other SIM cards also esim work find on this phone

@fmurodov i've created a ticket for our network support and asked my colleagues to inform you per mail or inform me. This will happen within 2-5 business hours. If they cannot figure it out, you can still try and request a physical sim. But please first wait on the response from my colleagues!

@Marcia van KPN thank you! i'll just regenerate again esim to switch back to my primary phone