Samsung Blockchain Keystore “Couldn’t install app”

If you’re getting the “Couldn’t install app” error when trying to install the Samsung Blockchain Keystore app in your device’s Secure Folder, then read on.  Skip the background if you’re familiar with it and go straight to the Solution section.


In mid-2019, Samsung came out with the Samsung Galaxy S10 phone.  At the same time, they introduced their first cryptocurrency wallet, the “Samsung Blockchain Wallet”.  At first, it only supported Ethereum.  But as of late 2019, it supports a few more cryptocurrencies, most notably, it now supports the most important one, Bitcoin!

But, to use the wallet app, it requires another app; the “Samsung Blockchain Keystore”.  I’m not sure why they separated that out into two apps, but my semi-educated guess is that you can create your keys and manage them in one app and use them in other apps, not JUST the wallet app.

Now, as anyone with any knowledge of cryptocurrencies knows, you have to be EXTRA careful with your keys for cryptocurrency.  YOU are 100% in control of your cryptocurrency.  If you’re careless, and it gets stolen, you have NO RECOURSE!  Unlike a traditional bank with FDIC insurance of up to $100,000 protection per account, there’s NOTHING for cryptocurrency.  That’s not a bug, that’s a feature!  With freedom, comes responsibility.  But that’s a speech for another day.  The point is, that if you’re going to do this on mobile, you want it to be a secure as possible, and on a Samsung phone, that means putting it in the ultra secure section called “Secure Folder”.  Now, let’s get back to the “Couldn’t install app” error.


Sorry to be the bearer of bad news, but there is no solution at the time of this writing (2020-01-04).  I spent an hour on chat support with Samsung, who then sent me to a phone tech support that’s a specialist on the Secure folder.  Both the chat tech and the Secure Folder tech were unaware of the problem and both confirmed that it is, indeed, a problem that they’re going to have to fix.

Here are the problems you’ll experience:

  1. When trying to install the Samsung Blockchain Keystore into the Samsung Secure Folder:
    1. It will not find it in the installed apps from the apps installed outside of the Secure Folder.
    2. It will not find it in the Play Store (to their surprise, it’s not in the Play Store at all.  You can search for it with a desktop browser.  It’s just not there).
    3. It WILL not find it in the Samsung Galaxy Store… at least, not directly.  First, you have to search for the Samsung Blockchain Wallet app, select it, scroll down for similar apps, and you’ll find the Samsung Blockchain Keystore down there.  Try to install it, and you’ll get the error:
    4. Installing the KeyStore app OUTSIDE of Secure Folder will NOT make it available to the wallet app INSIDE the secure folder.
    5. Even when installed outside of secure folder, it does not show up in the app drawer.  You cannot add its icon to the home screen.
    6. The ONLY way to launch it is to find it in the Galaxy Store and tap the “Open” button there.

So, the conclusion is that it’s not possible to use the Samsung Wallet app in the Secure Folder area.  And if you can’t use it in there, it’s not worth using.  You NEED the extra protection of the Secure Folder for your cryptocurrency.  DO NOT ATTEMPT TO USE IT OUTSIDE OF SECURE FOLDER!!!

Speaking of Decentralized Monetization,

If you like my work, you can contribute directly to me with the following cryptocurrencies (but, apparently, not with the Samsung Blockchain Wallet app in Secure Folder yet!)





Slow Motion Galaxy S7 Video Tests

I bought a Samsung Galaxy S7 on March 11, 2016 (well, actually TWO of them) and have been testing the features.  Now, this slow motion video is not a new feature.  In fact, I’ve had it on my prior phone, a Samsung Galaxy S4 for almost 3 years, but I’ve had Cyanogenmod installed on it for the the last 2 and a half years, so I’ve been missing this feature.

Details of Slo-Mo

The Galaxy S line of phones since the S4 have had a camera feature where the camera can record video at 240 fps (frames per second) at 1280×720 resolution.

Enough already, let’s see some slo-mo video!

Fine!  Here you go!  This first one is a water bottle connected to a SodaStream, being carbonated.

Next is video of spraying water on the headlight of my car.   I have this uploaded to YouTube, but because of the extreme detail of the thousands of water droplets, YouTube’s video compression really destroys it, so I’m providing it as a downloadable MP4 file instead (46MB).


If you want to see the butchered YouTube version, here it is:

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Review: Samsung Ultra HD 4K UD590 28 inch monitor

3840x2160 Desktop

Having been spoiled by 2, large $1,000 each 32” Dell 2560×1600 resolution monitors with my work-from-home job over the last 3 years, when I switched jobs with a new company, I was left monitor-less after I returned the company owned hardware.  I opted for a one monitor, but higher res, and cheaper solution.  I first ordered a Dell 4K monitor, which was a disaster.


imageWhile I was waiting for that monitor to arrive from Amazon during my 1 week vacation between jobs, I went to the local BestBuy to buy another to tied me over until the Dell arrived.  I bought the Samsung 4K UD590 28 inch monitor.  I ended up keeping the Samsung monitor and returning the Dell because the Dell monitor (see link above for why I ditched the Dell).

What I like

  • Picture Quality
    • Compared to the Dell monitor, the picture is brighter, has more vibrant colors, and a higher contrast.
  • Screen resolution
    • The screen resolution is a whopping 3840×2160 pixels.


      • See that screen shot at the top of the article?  That’s my desktop at the full resolution.  Those two little windows in the middle and lower left are 1024×768 desktops in 2 separate virtual machines.  One is running Mac OSX, the other is running Windows XP.  That should give you a sense of the huge desktop real estate you get with all those pixels.
    • Response time
      • 1ms response time means the mouse is not delayed.  Video is not delayed.  Audio from your speakers is not ahead, in time, from the video displaying on the monitor.  This is HUGELY important.
    • Simplicity
      • 1 DisplayPort, 2 HDMI ports.
    • Screen Size
      • 28 inches large.  This provides a lot of screen real estate for your high-end computing needs such as software development, CAD, Graphics, etc…
    • PIP (Picture in picture)


What I don’t like

  • Price
    • While ~$600 is lower than it was when it first came out and lower than the $1,000 Dell monitors with lower resolutions that I had before, it’s still a painful pill to swallow.
  • Ghost effects
    • I honestly don’t know if this is a problem with the monitor or the video card I bought, but it’s annoying as hell.  Here’s what I’m talking about:  When I move the mouse or scroll a window with a light background and dark text, there’s a ghost image left behind for a few milliseconds of where the mouse used to be or where the dark text used to be that is BRIGHTER than the white background.  It’s a poor user experience.
  • Lack of DVI and VGA ports
    • While I listed the 3 simple ports as a positive, it’s also a huge negative as it meant I couldn’t use my existing video card.  It was a high end card a few years ago, but lacks DisplayPort and HDMI.  It (my old video card) does, however, have 2 DVI ports and a VGA port and supports multiple monitors.  So, that meant I had to go buy a new video card.  I opted for the EVGA GeForce GTX 760 with 4GB of RAM.  Sadly, after I plugged that into my motherboard, I discovered that my power supply lacked the appropriate plugs to power this new video card, so I had to go purchase a new 600w power supply too…. all this just to run a new monitor!
  • Screen Size
    • Yes, I’m putting screen size in as both a positive and a negative.  While I’m used to a 32” screen, this one is a 28” screen.  I obviously do NOT blame Samsung for that.  It’s a 28” monitor… PERIOD!  But, when running the monitor at full resolution, the icons and text are so incredibly tiny, it’s ridiculous.  You really need a physically larger screen to run your desktop that this native resolution.  As a fix, I up’d the Windows DPI 150%.  That’s a feature that Windows has had for more than 20 years and this is the first time I’ve actually needed it.  This brought almost everything up to a large enough size that I can actually see it.  It also makes the text really crisp.  Think of it like a high-res display on your tablet… how it improves the text quality.  Same thing there.  If you want to run your desktop at 100% DPI with the full, native resolution of 4K, I strongly recommend getting a larger size than 28”.  I’d say 32” would be the bare minimum.  BUT, just crank up the DPI in your OS and you should be good to go.  MOST things scale up properly these days.  In the past, playing with DPI just hosed many apps.  Not true today.
  • Tilt
    • This monitor lacks usable tilt features.  You CANNOT tilt it forward.  So, if you place this monitor a little high, then you CANNOT tilt it down.  You CAN, however, tilt it UP, a little bit.  My computer desk has a shelf about 6 or 7 inches above the desk where I place my monitor.  The monitor stand holds the monitor about another 4 or 5 inches above that.  I’d prefer to have the monitor tilt down a little, but I can’t do that, so I have a cable running underneath the back edge of the monitor stand to tilt the whole thing forward just a little.
  • Raise/Lower
    • You CANNOT raise or lower the height of the monitor.  It is what it is as far as height goes.



For the most part, I’m satisfied and happy with this monitor, but the ghosting and tilting are problems I’ll have to live with.

Have you had any experience with any 4K monitors yet?  Tell us about it in the comments below.

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Is Samsung really cloning all the Google Apps?

Last year, there was an image floating around the net, supposedly showing all the cloned apps that Samsung has made of the Google apps.  Today, there’s an updated one for 2014 with even MORE apps in it.  The claim is that Samsung is cloning existing Google apps and making their own.  Then the people passing this around are espousing some kind of evil intent on the part of Samsung.


Let’s examine each one.  First, here’s a listing of all the apps in the popular meme going around:


Now, on each line, let’s highlight which app came out first in green… the Samsung app or the Google app:


As you can see, the vast majority of these apps came from Samsung first, NOT Google!  So, now that you know that, you can help the proliferation of the actual truth by:

  1. Not spreading the false information.
  2. Correcting people when THEY spread the false information.

Additionally, not all of these apps are direct comparisons and in many of them, the Samsung version has minor or major advantages.

Some apps that need special mention…


Camera vs. Camera

The Samsung camera app was not only out YEARS before the Google camera was released to the play store for all phones, but the Samsung camera is actually quite good.  In fact, it’s superior to the Google camera app in functionality.  It was won much praise.  Now, it’s not better on ALL accounts, but it WAS first.  The Google camera has the much coveted PhotoSphere feature though.

Chrome vs. “Internet”

Chrome was only recently released.  Before that, Samsung HAD to provide a browser and they could NOT provide Chrome… because it didn’t exist!  Also, Samsung’s browser has a few features that Chrome doesn’t like the ability to scroll pages by simply nodding your head without touching the screen.

Chromecast vs. Samsung Link

Again, Samsung Link was out YEARS before Chromecast.  Additionally, the two are not directly comparable.  Chromecast is intended for use with additional hardware.  Samsung Link was designed to communicate with multiple devices.

Google “Device Policy” vs. Samsung “Knox”

Aside from being first (not a clone), Samsung Knox and Google “Device Policy” are not exactly the same thing, though there IS some overlap.  Samsung Knox has two primary features:

  1. Divide the user’s phone into two, untouching environments (work vs. personal) so apps and settings in one don’t affect the other.
  2. Provide very strong security to give Samsung devices the OK from corporate I.T. departments, giving them the ability to control the “work” side of the user’s phone without interfering with the user’s personal side.

Google’s “Google Apps Device Policy” is intended for admins and users of Google Apps.  It does not divide a phone into a work area and a personal area AND it arrived AFTER Samsung Knox.

NOTE:  Android L will be incorporating Samsung’s Knox security.  Not only did Samsung NOT copy Google, not only was Samsung FIRST, but Google is now taking actual parts of Samsung Knox and embedding it into the base Android OS.

GMail vs. Samsung “EMail”

Yet again, Samsung was first with their EMail client (as was every other Android device maker).  GMail is a relatively newcomer to the Android E-Mail client scene.

Also, the GMail app works ONLY with GMail.  It does NOT work with any other E-Mail service.  Samsung’s E-Mail app is a general purpose E-Mail client app.  it works with ALL POP3 and IMAP email (including GMail).  It also works with Microsoft Exchange.  In addition to that, it also enforces Exchange’s security policies.

These apps are only barely comparable, but, as stated above, Samsung’s E-Mail client was out YEARS before GMail.

Google vs. S-Voice


Do I need to say this?  OK, I’ll do it just to be complete:  S-Voice was out long before Google’s app.  S-Voice was available as far back as AT LEAST the Galaxy S2 (as of this writing, the S5 is the current Galaxy phone).  That’s several years ago.  “Google Now” came out YEARS later.

Additionally, S-Voice has more local features than Google’s app does for integrating with the phone.  “Google Now” is slowly catching up though on the local features, but is still not there yet.   They overlap in many areas and each has features the other doesn’t.  S-Voice is also FASTER than “Google Now” in search test results.

Hangouts vs. Chat-On

Google Hangouts is another relatively NEW comer to the game.  Chat-On has been around longer AND it integrates with more chat services.  Hangouts uses ONLY Google chat services.

Keep Vs. S-Note

Not only has S-Note been out since AT LEAST the Galaxy S2 and Google Keep only recently came out, but S-Note’s functionality is vastly superior to Google Keep.  S-Note is a highly functional and very mature note taking app.  Google Keep is like notepad in comparison.

Google Photos vs. Samsung Gallery

Google Photos only came out in very recent history.  Samsung Gallery has been out almost since the beginning of Android time.

Google Play Games vs. Samsung S-Console

Once again, Samsung’s was out first.  It may be confusing to some people because S-Console went by another name in prior version.

Google “Play Movies & TV” vs. Samsung “Watch On”


As with everything else, Samsung was first.  BUT, these two apps shouldn’t really be compared.  Samsung’s “Watch On” is an app that turns a Samsung Galaxy S4 or S5 (and I think some of the Samsung Note models) into a universal remote control for your TVs, DVD players, and other set top devices using the IR blaster built into certain Android devices.  Google “Play Movies & TV” is essentially digital media online store.

Google “Remote Control” vs. Samsung “Smart remote”

Yet again, Samsung was first, but again, these two apps shouldn’t be compared.  The Google app is really called, “Remote Control for Google TV”.  It’s an app that lets you control your Google TV device (which is so new, it’s umbilical cord hasn’t even been cut yet.  Samsung Smart Remote is essentially a scaled down version of “Watch On”.

There’s a growing, vocal community of people that really really hate Samsung.  Some of it is justified and some of it is not.  One of the memes that just won’t stop is that Samsung is going in a direction away from Google.  That may or may not be true, but the evidence provided to support that claim is the false list above.

In fact, almost all Android phone makers provide many NON Google versions of these apps, especially a browser and e-mail client, because until recently, Google provided no browser and they STILL don’t provide a general use e-mail client.  Other apps that ARE overlaps of Google apps are so, with both Samsung and others, because there WERE NO Google equivalents when those apps were made.


All of the above was just historical facts.  The following is a bit of opinion…

Even if Samsung were or is intentionally making an ecosystem that doesn’t rely on Google, can you blame them?  Well, sure, you CAN.  But SHOULD you?  Does it make sense for ANY company to have so much of their business rely upon another company that’s not under their control?  of course not.  Every company wants to be in control of their own destiny.  So, I personally do not blame Samsung IF that is what they’re doing.

Now, what about the CUSTOMERS?  What’s best for THEM?  Is it a GOOD or a BAD thing for customers IF Samsung is actually INTENTIONALLY positioning themselves to survive WITHOUT relying on Google?

Of course.  Why?  Because if you’ve read this far, you are clearly an Android supporter and if you support Android, you almost certainly support it for many reasons, one of the big ones being that Android provides CHOICE.  Not just choice for something other than Apple, but choice WITHIN the Android platform.  If Google Maps is the ONLY mapping program out there, then you have no choice but to use it.  BUT, if there is competition, even IF you choose to continue to use ONLY the Google version, the mere existence of the competition will keep Google on their toes and incorporate features sooner than they would have had the competition not done it AND will cause Google to add features they may not have thought of to start with.


Competition and choice are GOOD things and THAT’S why you love Android.  NO ONE IS FORCING YOU USE THE SAMSUNG APPS NOR EVEN TO BUY A SAMSUNG PHONE!  Even if you want the Samsung hardware, but not the apps, YOU CAN DO THAT!  (if you root it, of course).

Can’t play 3D Blu-Ray DVDs?

Can’t play 3D Blu-Ray DVDs on your new Samsung 3D Blu-Ray DVD player?  Getting this error?




Here’s how to fix the problem:

First, I’m assuming the blatantly obvious, that you actually HAVE a 3DTV and your 3D Blu-Ray DVD player is connected to your 3DTV with an HDMI cable.

There’s actually a menu option in the DVD player menu system, buried deep inside, that you have to fix.  The Samsung tech support rep I spoke to on the phone had no clue and wanted me to take the disc back and swap it for another.  Don’t do that.  Here are the menus to fix it:

  1. From the main screen on your DVD player (press STOP on your remote if you’re seeing the blue screen error above), go to settings and choose “Display”.20121006_181223
  2. Choose “3D Settings”, then “3D Playback Mode”20121006_181250
  3. It should be set to “3D –> 3D”………………….20121006_181402

The DVD will then switch to sending a 3D signal to the TV.  Just like on a Windows computer, when you switch resolutions, it’ll give you 15 seconds to accept the change, or it’ll switch back.


Select OK and it’ll do the 3D video test.


Notice that my TV overlays another dialog box, notifying me that it’s now receiving a 3D signal.  Your TV might do something similar.  Note the dialog box behind that?  The one sent from the DVD player?  It’s got a 15 second count down and you’d better choose “OK” from your DVD remote or it’ll switch back to 2D mode.

Done!  Notice that in the image below, both the left and right eye images are showing.  My camera is not filtering them, so we see both… just to validate that it’s working.


Put your 3D glasses on and enjoy!

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Don’t spend $100 on an HDMI 3D cable

If you go to an electronics store like BestBuy or HHGregg for a cable to play 3D content, they’ll try to sell you a high end HDMI cable for a ridiculously high price.

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They’ll tell you you HAVE to have it to watch 3D content because HD 3D content uses too much bandwidth for the cheap HDMI cables to handle.  3D HDMI cables are rated at 10.2Gb/s (10.2 billion bits per seconds).



At least, not for the cheap ones that claim they can do 3D… or more specifically, these low cost 3D HDMI cables DO work.  I just verified it with my own 3D equipment.  The picture below is an affiliate hyperlink directly to the product on Amazon.


I ordered 6 or so of these and they work on all of my HDMI equipment, including the 3D DVD player connected to my 3D TV.  The work on all of my HDMI equipment, including the following:  all links are affiliate links to

image Sharp 70″ 1080p 3D LED Smart TV with FREE 3D Glasses
image Roku 2 XS 1080p Streaming Player
image LG 42CS560 42-Inch 1080p 60Hz LCD HDTV
image Samsung BD-E5900 3D WiFi Blu-ray Disc Player (Black)
image NEW VIP 722K Dual Tuner HD DVR Dish Network
image Toshiba DR430 1080p Upconversion Progressive Scan DVD±RW Recorder w/USB & HDMI (Black)

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Shovelware on your phone

Screenshot_2012-07-23-20-15-08Do you use the pre-installed software that came on your phone?  I don’t mean the popular stuff like Google Maps and such… I mean the proprietary stuff… the stuff from your Carrier like T-Mobile or Verizon?  Or the stuff from your handset maker like Samsung or HTC?   For example:

Getting started with S Memo

Not to pick on Samsung or their reportedly “good” app “S-Memo”… That’s one of many examples.  Usually proprietary software sucks or costs money to use or sux AND costs money to use.  But, sometimes, some of it is quite nice.  That’s purportedly the case with Samsung’s S-Memo, but I’m not here to promote that software.

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In fact, regardless of how nice it might be, I’m choosing to not even bother with it.  And, there’s an important reason why:

It’s not available on other phones and never will be!

One of the draws of the Android platform is that it’s hardware agnostic.  That means, I can run Android on a plethora of devices from an almost countless number of hardware providers and software written for Android will wok on the vast majority of them.  Why would I want to get mired down in an app that I cannot take with me when I decide to switch to another phone?  That would be like buying a Dell computer with a proprietary spreadsheet app that’s not compatible with Excel or LibreOffice.  Then, if I want to buy say, an HP computer, I can’t use the Dell spreadsheet app or the spreadsheets I created with it.  What’s the point?  Specifically, what’s the point for ME?  I can see the point for Samsung… If I start using it, it locks me into their hardware.  But that doesn’t help me or you.

So, regardless of how awesome it may be, I’m just simply not going to use it.  There are PLENTY of other note taking apps out there like ColorNote, OneNote, EverNote that are NOT tied to one maker’s hardware

What about you?  Do you use any of the proprietary software that came with your phone?  If so, what do you use and what are your plans for making the switch to another phone at some point in your future that doesn’t provide it?