Odin flash carrier firmware. I'd rather just buy the AT&T version and not have to go through the trouble.
Yes, AT&T has my IMEI in their database. I even gave them one from my AT&T branded S9+, but that trick doesn't work anymore. They read the IMEI directly out of the device at some point when it connects to their network.
I called support and asked them to verify that I had WiFi calling and VoLTE provisioned, but then when they saw the IMEI was from an unlocked S10+, they told me it wasn't supported.
I did everything I could short of flashing the carrier firmware, which I didn't want to do because I was considering switching back to Verizon. BTW, WiFi calling and VoLTE works fine on Verizon with an unlocked Samsung S9 or S10 without having to flash anything! It's AT&T that's being difficult.
For sure, with some of my prior devices unlocked firmware or even custom ROMs would not allow for ATT to be successful with WFC. It takes an IMEI ,(that's from an ATT branded device that does WiFi calling in your billing account) ..... AND ..... The correct CSC stuff ...... AND ...... a couple of files that are used by the system with ATT WFC.
The Pixel 3 and Pixel 3a had all that was needed, even though unlocked, to work with ATT and obtain WFC as long as you had correct info on ATTs end with an IMEI that allowed for WFC on their Network.
Btw in my experience I never had any issues with another IMEI being maintained in my billing account but admittedly it was easier for me to change IMEI because I could do it myself with my business account portal.
But some prior devices like the Note 9 and S9 and 10 required other stuff including files to make things to work.
My original question was a hopeful one that the newer device Note 10 (unlocked) possibly had everything it needed ( at least on the phone's end to make things work, like the Pixels do).
Btw. In my experience, asking level 1 or even 2 ATT tech support is utterly useless with things like this.
They don't " support" anything that isn't in their cookbooks that they read from during a tech support call!!!!!
All that said, my guess is that we may have to flash carrier firmware with Odin to get calling features with ATT but I also guess that TMobile will work out of the box, as I believe some have confirmed already
What Guyd said. I called At&t to see if they coould provision a device. The young lady I spoke with gave a list of like 5 devices they can provision. I then asked about the unlocked firmware and they do not support unlocked firmware for advanced messaging..wifi calling..or volte
SM-N935F Note FE OREO
