Usually I feel comfortable with getting most of iD Mobile features working by myself but since I got my Note 10 and my partner got S10 I really struggle to get WiFi Calling to work. Both of the phones are factory unlocked and purchased directly from Samsung.
* I have erased and setup my phone twice to see if that will help.
* I have reset network settings multiple times even when using safe mode.
* I have checked career provisioning using #*#*4636#*#* code and toggle for WiFi Calling is on but greyed out.
* I have turn WiFi Calling on and off and test it with Airplane mode multiple times.
My phone is dual SIM so as a test I have inserted o2 and Vodafone Sims from my mates to the second slot and WiF Calling works with both of them but as soon as I change it back to iD Mobile it's not working but toggle to turn it off and on is visible.
Below is few screenshot from my research.
I hope you guys can help me here, maybe one of the technicians would know what to do because I run out of ideas.
Best answer by Michelle
We can only guarantee wifi calling will work if the phone was purchased directly from iD Mobile.
You can contact Samsung directly to see if they are able to fix this issue for you on their end.