[MustardOrMayo]

Originally Posted by maximus83

However, I'd exercise caution. I decided not to go that route, as the OS is based on Android 6 which is rife with serious security flaws. Say that you start using it the way it was intended, you install various Android apps for convenience, you give it your Gmail credentials (which you may also use to access other sites, etc.). Then let's say somebody exploits one of those Android 6 flaws and gets your credentials, or some of your other private data. It's a real risk, and a real design flaw with these devices that are based on Android 6 or earlier.

I also have a Yoga Tab 3 Pro, which is stuck on Android 6, and I've not had such problems with it, besides the bugs in Lenovo's UX which I've ended up working around.

I believe both Boyue and Onyx uses Android 6.x due to limitations in the Rockchip hardware, and also that both companies take a long time to strip out unnecessary features from Android. This includes the lock screen, as the screensaver is shown whenever Android "turns off" the display, and seems to be saved to the display controller itself. Boyue does have a basic PIN code, and a private stash in the "Books" section (on Mimas/Muses firmware 1.0.2, and Mars firmware 1.0.7), which uses a separate PIN code.

By the way, if you want to set your own screensaver image, you'll need to manually scale the image to the resolution of the display, otherwise, it'll get stretched. Let me know if you want me to show a few ways you could do it.

Originally Posted by ClausG76

And I will be login in to google store.

Cool! I personally used only F-Droid, APKMirror, and Good e-Reader App Store to get apps on my Mimas, until I started using the paid version of Calibre Companion, which specifically checks for a licence on Play Store, so I had to enable Google Play Services, so I later ended up removing Good e-Reader App Store and APKTrack, and hiding the Boyue app store.

As for the Boyue curated "App Store", I looked in there a few times, but often, the apps from there are outdated, for example, they have an outdated version of KOReader that doesn't include screen refresh support for Rockchip-based e-readers like the Likebook devices.

Here's a screenshot of the Apps tab on my Mimas:

I only have "Screenshot touch" and "TouchShot" installed for demonstration in a YouTube video I'm planning to record.
The Android software runs in colour, which is then downscaled to greyscale based on lightness (on the default contrast level) by the display controller.

It's possible to take screenshots on the Mimas by pressing Power and Page Right at the same time, but on the Mars, you would need to use a third-party app in order to do it, as the screenshots are not an offically supported feature by Boyue. For this, I recommend "Screenshot touch".

If you want, I could explain what I use each app for.

Also, on apps you install yourself, you can tap and hold on the icon, and adjust settings for that app. As you have already received your device, I'll let you see those for yourself. However, if you want to hide an app from the Apps tab, you can do so by going into the Apps section in Settings, then tapping on the app you want to hide, and tapping on the switch next to the "hide" entry.

Boyue also has their own power and memory management software on top of what is already built-in to Android, in order to compensate for the limited amount of RAM. The snowflake icon in the top left on the Apps tab leads to a page where you can select which apps you allow to run at startup, and which you allow to run in the background. This does break background syncing in the actual reading apps, but I'm fine with that.

Originally Posted by ClausG76

But the plan is to disable most features which isn't reading related, including email clients

Yep, and you don't get a lot of preloaded apps anyway. Google Play Services is disabled by default due to legal reasons, but you can enable it by going to Settings (cog icon on Home tab, or "UserSettings" on Apps tab), then "Apps", then the cog icon in the top right, "Enable Google Framework", and restart.

Originally Posted by ClausG76

The default reader could have been great. You can add your own fonts and dictionaries. But the text is a little messy. Some of the lines uses extra space between the words, like its trying adjust the with of the text lines.

Not a problem for me as I primarily read books in PDF, but I've seen that problem when I use the reflow feature, which I don't really use, except to screw around. However, I do also use KOReader, but feel its interface is a little too clunky for me, in terms of navigation. I'm sure I'll eventually get over it, though.

Originally Posted by ClausG76

My workaround for now, is to use Koreader. You can set it up, to load the books automatically with an alternative reader.

I too use KOReader. However, I recommend getting their latest version, rather than the one from the Boyue curated "App Store".

Originally Posted by maximus83

This. IMHO, the whole reason for the appeal of an Android e-ink is so you can run Android apps.

I agree.