I got the September update as soon as I turned on my original pixel for the first time a couple days ago..... that was over wifi with no sim card installed. I set my pixel up first and completely upgraded it from Nougat to Oreo to Pie without the sim, then factory reset it and added the sim last because I wanted to be sure Pie was going to work right after all the problems I've been reading about, and I didn't want to take my then current phone out of action till I knew I could count on Pie....... it's working better than any other Android version I've ever used...... and the Bluetooth is fantastic ;-)