Not once in my life have I ever migrated to a new phone, desktop, watch, laptop, WHATEVER and had it go smoothly.
If it can go wrong it will.... 100% of the time. Well...I think I finally got it working but not before using every cuss word known in the 7,000 languages on planet earth. And it's NOT completely setup. I can, however, take phone calls. And I think text although I haven't tried it yet. The rest? I give up easily so it either works or I learn to live without it.
