I have a Pixel 3a XL that had /e/ 1.0 on it, but it would not dial out. So I was going to try the solution from the Motorola XT1965-T and reinstall the stock ROM, and afterwards reinstall /e/. But I ran into a problem. The Stock Android 11 also does not call on the ATT network. I have to upgrade to Android 12L to be able to dial out. (And it looks like it has Wifi calling but I did not try it.) After having upgraded to Android 12L, I put back the stock Android 11 ROM and again could not dial out.
My understanding is that the /e/ version for the Pixel 3a XL is “R” and should not be flashed on a device that has Android 12 or 12L. Is that correct? And if so, is there another fix to the dialing when 3G is shut down? US T-Mobile is shutting down 3G July 1st, I believe so it is getting really important in the U.S.
Thanks,
Eric
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