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Run the Xperia XZ Premium in 4K all the time with this trick

The Sony Xperia XZ Premium is easily one of if not the most expensive flagships this year, at least for now. But if, for a moment, you ignore that price tag, you’re actually left with a rather competitive high end smartphone with a very high-end screen. One of the very few, perhaps only two, 4K smartphone screens in the market. But for performance and battery life reasons, Sony doesn’t make full use of that UHD screen all the time. But if you think it’s well worth the consequences, you can easily force the Xperia XZ Premium to use that high density setting all the time with these relatively simple steps.

Two years ago, Sony unveiled what was perhaps the first 4K smartphone in the market, followed by the Xperia XZ Premium this year, with a dash of HDR support. The idea was to allow users to enjoy 4K and HDR content on their smartphones, despite such content being on the slim side. That, of course, never stopped Sony from trying, though it did make some concessions to appease worried users.

The 4K resolution only really kicks in when watching 4K content and nothing else. Everything runs at 1080p Full HD, save perhaps for some 2K (QHD) content. The UI itself is stuck at 1080p, however. This is to prevent the screen from eating all that precious battery minutes. Some, however, think that’s a premature optimization and that running the phone in 4K all the time has minimal impact but has all the perks of having a crisper display.

Fortunately for these people, it’s actually not that difficult to flip a switch. Actually two switches. It’s not as simple as going to the settings app and pushing a slider like on the WQHD+ Samsung Galaxy S8 and LG G6. But it’s not as difficult as having to root your device or tinker around with files. At least not much. The most difficult part of the process is installing the Android SDK. Even that is actually now easier since Google now provides the relevant ADB tool as a separate download. Once installed and your phone connected to your computer, you need to run ADB in your OS’ shell (Command Prompt on Windows, Terminal on macOS and Linux) and enter this commands to change the resolution to 4K:

adb shell

wm size 2160×3840

You will notice everything suddenly look smaller which is easily fixed by setting the correct pixel density for the new resolution:

wm density 820

That’s pretty much all that’s needed. Android Kosmos, who broke news of the trick, says that the setting is preserved across reboots. Going back to the normal Full HD setting simply involves setting the wm size to 1080×1920 (Full HD) the density back to the default 420.

Damir Franc, who gives the video tutorial below, says that the battery drain by having 4K all the time is almost non-existent. Of course, your mileage might vary but what’s more important to note is that some apps might not display correct or not work at all. Hopefully someone will soon come up with an app that lets you change all these on the fly without having to go the ADB route every time.

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Add Any Website To The Chrome App Launcher With This Trick In Windows

Unfortunately, the feature is only available in Windows (as of now). Here’s how to use this new experimental feature:

1. Go to this link in Google Chrome: 

Note: Since the feature isn’t final yet, this is the only way to turn it on.

3. Browse to any website that you’d like to create a hosted app for.

That’s it! Now you should see that website in the Chrome App Launcher. If you’re using Chrome OS, this can be a really convenient way to access all of your favorite and/or frequently visited websites.

Charnita Fance

Charnita has been a Freelance Writer & Professional Blogger since 2008. As an early adopter she loves trying out new apps and services. As a Windows, Mac, Linux and iOS user, she has a great love for bleeding edge technology. You can connect with her on Facebook, Twitter, Google+, and LinkedIn.

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The 9 Best Nes Games Of All Time

Released in 1986, the Nintendo Entertainment System—or NES, as it’s so often called today—was the best-selling video game console of its time. Although its simplistic graphics have gone from great to bad to charmingly retro over the past thirty years, one fact remains the same: there are a lot of great games on the system. 

Everything from Legend of Zelda to the original Super Mario Bros makes the NES a revolutionary platform. Whether you’re revisiting old classics or experiencing them for the first time, these are the best NES games of all time.

Table of Contents

Also, be sure to check out our YouTube video where we show you some in-game footage of the games mentioned below:

Super Mario Bros

This is the game that started it all. Counting all of its ports and re-releases over the years, the original version of Super Mario Bros has sold a staggering 40.2 million copies, making it the single best-selling Mario game of all time. 

In fact, as the flagship title of the NES, Super Mario Bros represents more than just a fantastic platformer that grew into a franchise: it represents the revival of the video game industry as a whole. It was definitely considered one of the best NES games of its time. Following the 1983 video game crash, the NES brought the floundering industry back from the brink, and Super Mario Bros helped drive sales of the system.

The Legend Of Zelda

The Legend of Zelda was the first of the series to grace any console and brought with it many of the beloved enemies: Moblins, Lynels, and even Darknut. It also birthed the forever-famous line, “It’s dangerous to go alone. Take this.” 

If you have never experienced The Legend of Zelda, you owe it to yourself to dive in and save the kingdom from Ganon and his misuse of the Triforce of Power. As you explore Hyrule for what may be the first time, make sure to search for secrets: the game is loaded with them, an element that would go on to become a staple of the series.


Metroid introduced the first half of the two-gameplay formula that would become Metroid-vanias. It’s the classic formula of starting out weak and exploring a huge world in search of more weapons and abilities that will allow you to reach previously-unreachable areas, overcome bosses, and complete the game. 

Samus starts out with just her beam weapon and goes on to find well-known powerups like the Morph Ball and Bombs. The NES version of Metroid also introduced the recurring boss characters of Ridley and Kraid.


The second half of the winning Metroid-vania combination, Castlevania is a challenging platformer that has Simon Belmont exploring Dracula’s Castle in search of the evil vampire. While it doesn’t have all of the same elements as later titles in the series, it sets the standard for the core gameplay that would continue in every iteration to come. 

Something worth noting is that the original Castlevania is available on the NES Classic, as is Metroid. If you like Metroidvanias, try out the two games that started the genre.

Final Fantasy

The NES Final Fantasy was, like so many others on this list, the first of a massive franchise. The game was released in 1987 and spawned the series that so many people love today. 

However, the name has something of a unique story behind it. Supposedly, Square was on the verge of bankruptcy, and the launch of Final Fantasy was their make or-break game. If it didn’t work out, the company would have to shut its doors.

Clearly, that didn’t happen, and now Final Fantasy stands as one of the best NES RPG games of the era. It features turn-based combat, different roles for different characters, and many elements that were before their time. 

Kirby’s Adventure

Kirby’s Adventure isn’t the first Kirby game, but rather a sequel to the Game Boy title Kirby’s Dream Land. Kirby’s Adventure improved on many of the best features of the first and introduced Kirby’s signature move: sucking up enemies and copying their abilities. 

This was also the first game to show Kirby in color, which surprised many people; no one knew he would be pink, especially since the original Game Boy game was in black and white. Kirby’s Adventure has players fight across 41 levels in 7 different worlds.


Contra was a run-and-gun top-down shooter known for its nonstop action and brutal difficulty, but also for one other, truly classic element: the Konami Code. 

For those that aren’t familiar, the Konami Code (Up, Up, Down, Down, Left, Right, Left, Right, B, A) granted players an additional 30 lives to help them overcome the exceedingly high chance they would lose during a Contra run. And since Contra was played in a day before save states, ‘game over’ meant starting from scratch.

Duck Hunt

No list of the best NES games would be complete without the original duck-hunting light gun game. The premise is simple. Ducks fly across the screen and you take aim and shoot them out of the sky with the attached peripheral. The downside? If you miss, a way-too-snarky dog laughs at your failure. 

It is also multiplayer, a fact many people do not know. The second controller maneuvers the ducks! Of course, light gun technology requires a CRT television to work, so you will need to find an older TV in order to play today.

Mega Man

The Mega Man series is another long-running franchise that saw its start on the NES. The Blue Bomber faced off against Dr. Wily and his Robot Masters in level after level of platformer-meets-bullet-hell action. Each Robot Master drops a new ability, and this ability is the weakness of another boss. 

Fighting the enemies in the right order results in a much easier game, but Mega Man can be completed in any order. It’s a great way to experience many of the original gameplay elements that are still present in the Mega Man series today.

Save And Restore Groups Of Tabs In Chrome With This Quick Trick

Having too many tabs open in ones web browser is a problem that many internet users face on a daily basis. What’s even worse is that having all those tabs open can also slow down your browser tremendously. For this reason it’s a better idea to keep only a few tabs open at a time and save the rest for later.

So what do you do if want to save those tabs for later?

Well, there are plenty of Chrome extensions available to help you better manage your tabs, but this quick trick from OMG! Chrome! doesn’t require an extension at all. Here’s how you can quickly save and restore groups of tabs in Chrome without installing an extension.

Saving Groups of Tabs

2. Name the folder anything you’d like, such as “Saved Tabs” or “Bookmarked Tabs.”

4. Choose the folder you created above as the location, and add a descriptive name to your tab group; this will create a new folder within your “Saved Tabs” folder.

Restoring Groups of Tabs

Image Credit: T a k

Charnita Fance

Charnita has been a Freelance Writer & Professional Blogger since 2008. As an early adopter she loves trying out new apps and services. As a Windows, Mac, Linux and iOS user, she has a great love for bleeding edge technology. You can connect with her on Facebook, Twitter, Google+, and LinkedIn.

Subscribe to our newsletter!

Our latest tutorials delivered straight to your inbox

Sign up for all newsletters.

By signing up, you agree to our Privacy Policy and European users agree to the data transfer policy. We will not share your data and you can unsubscribe at any time.

Understanding The Main Triggers Of This Bitcoin Bull Run

Bitcoin has hit new all-time highs quite a few times in the last week. At the time of writing, bitcoin has struck a high of $34,830. Clearly, bitcoin is in a bull run, especially with Coinbase striking, what could be, potential OTC deals pushing BTC out of exchanges.

With more BTC being bought up by hungry institutions or high-net-worth individuals, the scenario for bitcoin is getting more bullish by the second. While the retail FOMO plays a part in this rally, I think it’s time to take a step back and look at what’s happening in the market.

The Bigger Picture

Phase 1

In hindsight, these two events among others are what sparked the bull run that we see today.

Let’s look at what has happened since August.

MicroStrategy invested ~half of $1 billion in cash reserves in Bitcoin without moving the price of BTC.

Since this was the first major investment by a traditional finance company in bitcoin, it was paraded all over the news for bringing more credibility to bitcoin among retail.

CashApp and many companies invest in bitcoin to prevent their cash reserves from debasing due to inflation by the Fed.

Even with billions of dollars moving into bitcoin, the price seemed to stay put as it hovered around the previous all-time high. After two failed attempts, the price went above the 2023-high at $19,666.

Phase 2

Michael Saylor invested the other half of $1 billion in bitcoin despite what the critics had to say.

Major Bitcoin outflows from major exchanges such as Coinbase Pro, Binance, etc.

Drying up of the exchange reserves as a result of point 2 and retail pulling out their BTC from exchanges, signifying the strength of the rally.

Unlike 2023, this bull run showed that retail is more matured. Hence, the bull run this time around isn’t as volatile as it was in 2023.

More companies/institutions are actively looking to buy more BTC or are already buying it.

Point of inflection

Since 2023, things have been difficult, for both the front end of the bitcoin ecosystem which includes investors, exchanges, companies built around bitcoin, and the backend, which includes miners and related companies.

Let’s take a look at miners and what’s happening with them, especially since they are the major source of selling pressure in the entire bitcoin ecosystem.

After the March crash, the worst was behind for miners, and by the start of the 3rd quarter, things were already looking up for them. This is when bitcoin crossed $8,000 and eventually hit $10,000.

At this point miners were not profitable enough, hence, selling pressure was present. Considering the price now, miners will only have to sell a portion of their mined bitcoins to cover all expenses incurred due to mining.

This selling pressure has now reduced, which is the third reason why bitcoin is heading higher without stopping.


Together. these events in whatever order, have caused bitcoin to surge. As for what the future holds, bitcoin will keep surging, as more people keep depositing stablecoins to exchanges.

Perhaps, the best point for a local top would be at $40,200. From this point, we can expect bitcoin to start its retracement, but then again, the further one tries to predict the future, the more uncertain the conclusions are going to be.

The Ld Preload Trick On Linux

Introduction How LD_PRELOAD actually works?

For example, consider this simple “C” program that calls the printf function from the stdio.h library −

int main() { return 0; }

Output Hello, Earth

If we compile this program and execute it normally, the printf function will be called from the chúng tôi library, which is the standard “C” library on most Linux systems. However, if we set the LD_PRELOAD environment variable to point to a shared object file that contains a custom implementation of printf, the dynamic linker will load that shared object file instead of chúng tôi , and the custom implementation of printf will be called when the program is executed.

To set the LD_PRELOAD environment variable, we can use the export command in the terminal −

$ export LD_PRELOAD=/path/to/

Then, when we execute the program, the custom implementation of “printf” will be called instead of the one in −

$ ./a.out Hello, Earth! Use Cases for LD_PRELOAD

There are several common use cases for LD_PRELOAD −

Debugging and Testing

One of the most common uses for LD_PRELOAD is to override functions in a program for debugging and testing purposes. For example, we might want to write a custom implementation of printf that logs all calls to the function, or a custom implementation of malloc that checks for memory leaks. By using LD_PRELOAD, we can easily insert these custom implementations into a program without modifying the source code.

Dynamic Linking

LD_PRELOAD can also be used to dynamically link a program to a shared object file that was not linked at compile time. This can be useful if we want to use a library that is not installed on the system, or if we want to use a newer version of a library that is installed on the system.

Malware Injection

Unfortunately, LD_PRELOAD can also be used for malicious purposes, such as injecting malware into processes. For this reason, it is important to be cautious when using LD_PRELOAD and to only use trusted shared object files.

Limitations of LD_PRELOAD

There are a few limitations to consider when using LD_PRELOAD −

Function Overrides Only

LD_PRELOAD can only override functions that are called through the dynamic linker. This means that it cannot override functions that are called directly through the program’s code, or functions that are implemented in statically linked libraries.

Shared Object Dependencies

Preload libraries must be self-contained and cannot depend on other shared object files. If a preload library depends on another shared object file, the dynamic linker will not be able to load it.

Order of Preload Libraries

The order in which preload libraries are specified in LD_PRELOAD is important. If two preload libraries both provide implementations for the same function, the implementation in the library that is specified first in LD_PRELOAD will be used.

Security Implications

As mentioned earlier, LD_PRELOAD can be used for malicious purposes, such as injecting malware into processes. It is important to be cautious when using LD_PRELOAD and to only use trusted shared object files.

Example: Overriding printf

To demonstrate how LD_PRELOAD works, let’s create a simple shared object file that provides a custom implementation of the printf function. We’ll start by creating a file called custom_printf.c with the following contents −

int printf(const char *format, …) { va_list args; va_start(args, format); vprintf(“Custom printf: “, args); va_end(args); return 0; }

This implementation of printf simply prepends the string “Custom printf: ” to the beginning of the output. Next, we’ll compile custom_printf.c into a shared object file using the gcc compiler −

$ gcc -fPIC -shared -o custom_printf.c

Now, we can use LD_PRELOAD to override the printf function in a program. First, we’ll set the LD_PRELOAD environment variable to point to −

$ export LD_PRELOAD=/path/to/ Example

Then, we’ll run a simple “C” program that calls printf −

int main() { return 0; }

Output Hello, Earth!

When we run the program, the output will be “Custom printf: Hello, world!” −

$ ./a.out Custom printf: Hello, Earth!

As we can see, the custom implementation of printf provided in was called instead of the one in chúng tôi .


Overall, LD_PRELOAD is a powerful feature in the Linux dynamic linker that allows users to preload shared object files into the address space of a process before it starts executing. This can be used for a variety of purposes, such as debugging and testing, dynamic linking, and malware injection. However, it is important to be cautious when using LD_PRELOAD and to only use trusted shared object files. LD_PRELOAD has a few limitations, such as the inability to override statically linked functions and the requirement for preload libraries to be self-contained. Understanding how LD_PRELOAD works and its limitations can help users effectively utilize this feature in their work.

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