I received my phone before this thread was created and the experience was
- First I connected it to the charger (because there were earlier reports that batteries had run out during first boot)
- The battery was at 34% (or something in that ballpark, don’t remember the exact figure)
- Several hours later the battery was still at 34%
- I disconnected the charger
- I connected the charger again, now it showed 99% immediately. I concluded that the charging display does not update automatically, but now the the battery would be full enough
- Booted the device. I had no extra SIM handy so without SIM. Charger still connected to be on the safe side
- First boot worked nicely. I chose a 6 digit security code after having read previous warnings. There was a button to go online and register accounts. That button was dead, so I selected “skip” in that phase. Tutorial went nicely (not that I would have really needed it after 10 years of Sailfish usage
) - Saw that the Bluetooth icon was on. I hardly ever use BT, so went to settings in order to disable it. The BT settings page was blank, so I skipped that
- Tried to turn on WLAN. The WLAN page said there was a networking error and advised to restart the device
- Restarted the device. It went to first boot procedure again. To be on the safe side I used the same security code as before. Encrypting user data reported “failed” and the connect button did still not work, but otherwise the device continued to work nicely
- Went to WLAN settings again. Same error, advice to restart.
- Restarted a 2nd time. Now it did not go to first boot, but after entering the security code I got a never ending spinner.
- Disconnected the charger
- Restarted a 3rd time. Endless spinner again after entering security code.
- Restarted again. Intentionally entered an incorrect security code. It replies “incorrect” immediately. Correct security code leads to endless spinner again.
In that phase I run out of time and put the phone to the drawer and have not touched it since.
Reading reports above it seems be to be de-facto bricked. Let’s see whether we will get a recovery procedure without sending it in. Well, I did not expect a mature product, so I can’t say I would be really disappointed. Just less lucky than with my previous Jolla/Xperia phones 
The device is in Tampere, if you need a piece for your debugging I will be happy to take a bike trip to Polttimonkatu.