About Sailfish X:
True, but how many of us consider bluetooth unavailability a serious problem? I rarely used bluetooth with my other phones (including Jolla and N900). Ages ago it was the faster and better way to share some pic/contact, but today? With the exception of bluetooth earsets and toying with BLE (which requires someone writing Sailfish-specific apps), is there any real life usage?

Even less the FM radio, that has been around for quite some time: nice toy, but... did anyone ever feel the need to use it?

Thus, if there are issues with FM radio and bluetooth, it means that the more interesting stuff (USB, wifi, camera...) are working well.

About Android 8 kernel:
While this is true, it comes a bit too late (Android 8 just came out now) - you only switch kernels (and thus all critical libraries) after thorough testing. I guess it may happen with SFOS "3.0" (when they will update Qt as well); I name it "3.0" because a large number of apps will need some testing and possibly updates.

Some news...

Stock Android 7 on Xperia X asks the user to enable some "audio enhancement" everytime I use the earplugs. I never allowed it because I'd like to have a fair test on a number of different ear sets. So far the stock Sony earplugs performed surprisingly well, albeit at a lower sound pressure level (SPL) than the AKG 317. My only regret is that the '317 sports a volume slider, more useful than an integrated microphone. (Note that sound quality is not a synonym of "more SPL").

Another good thing on the Xperia X: the camera glass (the one protruding 0.3mm out), while collects dust around it (because it protrudes), is surprisingly resilient to dirt. I've always checked the camera glass on my phones before taking a picture because it was very easy to get it dirty.

The "dual SIM" use case is somewhat rare:
- people willing to have both personal and work phone numbers in a single device
- people willing to use two different carriers (example: one for voice and the other for data)

It would have to deal with a number of extra issues:
- temporarily disabling one SIM (probably you don't want "work" calls/texts outside work hours)
- selecting SIM to use to send next SMS
- allowing/disallowing data traffic from the other carrier when the selected one is unavailable
- maybe also managing Contacts to avoid mixing work and family ones...

The only other reason to choose the F5122 over the F5121 is the internal memory (64 Gb vs 32 Gb). But if you use a cheap 64 Gb microSD to store all of your "large" (i.e. multimedia) data, you'll probably won't consider an issue having only 32Gb (Jolla1 was 16) inside...

Can't wait for October 11 (also, I guess future Sailfish X devices will be announced later).

Wondering if the Sailfish X installation instructions will include backupping of the Xperia X keys.

Also, if ~20,000 people buy it, that will mean One Million Euros to Jolla guys for their hard work (yay!). But mostly it will mean a clear message to Sony managers: lots of people are willing to pay even 50 bucks to get Sailfish instead of Android - that is, Sailfish is not an Android replacement but added value. Basically my 50 bucks are more an investment than buying an operating system.