Never thought of that... how can I do it?

I did the jump from 2.0.1.11 to 2.0.4.13.
Unfortunately, I have a massive battery drain since then. One minute display on and surfung the web equals 1.5% of battery.
I don't see a problem with Lighthouse or AIDA64. It drops to 3...8% CPU. 3 cores are at sleep most if the time.

Any hints what might be wrong?

Cheers!

After answering, take a look at your screen - the buttons are more than usual and one of them is switched on...

I know BT us not useable at all for phone calls. Music seems to sound fine on BT. Even without BT, phone call audio just not usable for me. Speaker phone is doing the same thing also. My end, it sounds great. It's always the other end having the issue.

My colleagues and clients are complaining too much. I am booting back to android for the time being for my daily use.

I love to use Sailfish OS, so I am anxiously awaiting for a device with good/high end specs (at least 5" size and 2/3GB RAM, etc) and fully functional on USA LTE, preferably T-Mobile. Who knows if that's ever going to happen and who know how long I will be interested. A cheap device with odd OS makes it looks like a cheap OS. We need a device that will make Sailfish OS elite.

OnePlus X?

Is it really usable and stable with Sailfish OS? How is the phone call audio with and without BT and speaker phone? I make a lot of calls on the road (I know, I shouldn't!) , so phone calls must be good for me and the caller.

Nexus 5 working great for everything else, but not quote good for the phone calls for me.

Phone calls are fine, good quality, BT works, including PBAP (with 2.0.4, there were problems in 2.0.3.x). The only issue I have is the home screen freezing, but that's a problem with all phones with 2.0.4. Stopping LPM minimizes that. BT is disabled after reboot, you need to manually start it (adaptation problem).

Now that the browser has newer engine it is much more usable and I don't miss the Android apps from Jolla One so much.

Camera works rather good, though sometimes after update it doesn't show the viewfinder for some reason - a restart fixes that. There is also a patch from kimmoli, that enables 4K for video, didn't use it yet.

Can't be used with multirom though.

Finished update of my daily driver partition today. I didn't had a single freeze with LPM enabled, and i use the Sneak Peek options often, because of the double tap to wake.

Isn't kimmolis 4k patch only for the OnePlus X?

Yep

Thanks for the detailed reply Bundyo.

I am still stuck with Whatsapp, so I don't have much choice, yet. That is the only Android app I have to use. Now that I have used LTE on Nexus 5, it is hard to go back to 2G on my Jolla 1.

Sailfish 2.0.4 also seems very good. Once of the most important feature I was missing was native conference calls and it seems to work great now on Jolla 1.

Well, wait I guess for a good device to come out.