After researching the iD wifi calling phone compatibility test, I settled on a Samsung A3 2017. When I try the iD Mobile SIM, I don’t get prompted for any setting updates, and WiFi Calling is not shown as an available option under phone settings. As soon as I insert a BT SIM, immediately I have the WiFi calling options. The phone is unlocked, I can make calls on iD, but the phone doesn’t “read” that wifi calling is available with this SIM. Yes, I’ve read every other related Samsung & wifi calling post here, I’ve done all the recommended steps as silly as they seem, so I ask that I not get the same non-applicable answers cut & pasted here, I’ve wasted enough of my time & money on this so far. This scenario is not addressed here, nor is it mentioned on the Phone compatibility page, which it should be.