Thank you very much for this news! I already received an answer from the support team.
I am really very happy to hear that the root cause has been found and will be fixed.
Honestly the last 4 months have been really frustrating, doing phone calls every day, often without being understood or without understanding the other side. And it was also frustrating that the support in the last months was not really convinced that this is a real issue - they always said the problem is on my side, I should change something (new SIM card - no, was not the solution / changing SIM slots - was not the solution / doing a full factory reset - can not be done that easy when the phone is used for business, too / etc.).
So thank you very much for this good news, I am looking forward for this update! I guess when the bigger issues are left behind, the FP3+ and me still have the chance to be friends