Trending March 2024 # Do Blue Light Filtering Apps Really Work? # Suggested April 2024 # Top 4 Popular

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It’s basically become accepted wisdom that staring at screens too close to bedtime will interfere with your sleep, and this isn’t just a popular myth. There is real scientific evidence that blue light has small, but measurable, effects on many of the systems in your body and brain, from circadian rhythms to cells in your retina. It doesn’t affect everyone the same way, and it’s hardly a public health crisis, but cutting your blue light intake might be at least a little beneficial.

Why blue light, specifically?

Blue light is on the high end of the energy spectrum, meaning that the photon is bouncing up and down a little bit faster than in other colors. A shorter wavelength means there is less distance between each peak of the wave (665 nanometers for red light, 470 for blue), and color is detected because these waves are bouncing directly into your retina.

Your brain processes these wavelengths and gets some signals about what to do. Any amount of light can send a “wake up!” signal, but higher energy sends the strongest message of all. Blue LEDs aren’t the highest-energy color, but because they’re in everything, we’re absorbing a lot of their light.

This is your brain on blue light

Blue light is actually good for you. Your “memory, alertness, attention span, reaction times, learning ability and cognitive performance all perform much better under blue light,” so if you need to get some work done, it might give you a little boost. The healthy relationship only turns a bit toxic if we get too much blue light or if we get too high of a dose late at night. Research has found evidence for some negative effects, but they generally aren’t too severe.

Trouble sleeping

One of the reasons that blue light especially makes you more alert is that it inhibits melatonin production in your brain, which means your brain isn’t getting the signal that says it’s time for sleep. This might make it harder for you to fall asleep and decrease the quality of the sleep you do get. Not all humans react the same way, but on average, this effect has generally been found to exist. Insufficient sleep, especially under six hours per night, can then lead to a whole other set of health issues.

A disrupted circadian rhythm

We all have a different circadian rhythm – the internal clock that keeps track of when it’s time to feel sleepy or feel more awake. Staying up later with artificial light doesn’t seem to be a huge problem for us, but blue artificial light can be more disruptive than other types, especially late at night.

A Harvard study compared the effects of 6.5 hours of exposure to blue light with the same amount of exposure to green light and found that blue light shifted circadian rhythms by an average of 3 hours, versus 1.5 hours for green light. This can make us a lot sleepier in the daytime and has even been linked to health problems, like a higher risk of diabetes.

Blue light and your body

Blue light affects your body indirectly by messing a bit with your brain, but it turns out that higher-frequency light, like blue light, may actually be somewhat damaging to your eye as well. High-energy light like ultraviolet rays can definitely damage your skin, so it’s certainly possible that intense blue light is doing something to the more sensitive photoreceptors in your eyes.

The effect has been shown in animal studies, but has yet to be confirmed in humans. Either way, it’s not cause for too much alarm just yet. At worst, it’s unlikely to do more than speed up the eyes’ natural aging process a little bit.

How to not get the blues

Since the science seems to agree that large amounts of artificial blue light aren’t good for you, it’s worth looking into solutions.


Using one of those blue-filter apps is probably the easiest way to cut your intake, but there isn’t really much evidence on their effectiveness. The automatic brightness-lowering feature may help more, as less light has definitely been shown to help with melatonin levels. Despite the lack of hard evidence, using these apps can’t hurt.

Blue light-filtering glasses

Also called “computer glasses,” these spectacles are usually tinted yellow (but you can get clear versions), which changes the wavelength of the light passing through them. They do block blue light and wearing them while using devices close to bedtime may help you reach more natural melatonin levels. Studies on their effectiveness are largely inconclusive, though.

Blue light filters for your devices

If you don’t want to start wearing glasses, you can choose to put a blue light filter directly onto your device screen. They’re mostly transparent, so your screen won’t get that reddish tint, but they work on the same principle as the glasses.

Restricting device use at night

Conclusion: Don’t Panic

Blue light won’t burn out your retinas and turn you into an insomniac no matter how much you look at a screen. Some people may have stronger biological responses to it than others, but as long as you don’t get less than six hours of sleep a night, decreasing blue light probably won’t change your life. Of course, new research is always coming in, so it can’t really hurt to take some precautions if it makes you feel better.

Andrew Braun

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Light Filtering Polaroid Films


Light is represented by an Electromagnetic Wave (EMW), where it travels by oscillating electric and magnetic field intensities simultaneously. Here, the electric field will be perpendicular to the magnetic field and vice versa. Not only that, these two components together oscillate perpendicular to the direction of propagation of light waves.

Mainly, oscillations due to electric fields in a plane are considered for the light as electromagnetic waves when compared to magnetic fields. Hence, light electromagnetic waves are also called transverse waves. Since the atoms that produce EMW can vibrate or oscillate in all directions, it will be difficult to focus the light at a spot we need. For some applications the intensity of light should be reduced like in vehicles to prevent accidents, there shouldn’t be a back reflection of bright light.

DECHAMMAKL, Electromagnetic waves, CC BY-SA 4.0

To overcome this type of issue, the brightness of light wave intensities should be reduced by starting the atoms to oscillate in all directions and thus allowing light waves to propagate in one direction only. This process is called polarization and it is done by using polaroids.

What is Polarization?

We know the light is a transverse nature of electromagnetic waves where the electric field is considered and it travels perpendicular to the light propagation in a plane. The particles in the light oscillate in different directions, giving rise to the vibration of the electric field components in vibrating all the directions in a plane. So, in normal light, the vibration of the electric field will be in different directions leading to an unpolarised light. Suppose we constrained all the vibrations of the electric field in every direction except in one direction, it is said to be polarised light and this process of obtaining polarised light is termed polarization.

Dave3457, Circular.Polarization.Circularly.Polarized.Light Circular.Polarizer Creating.Left.Handed.Helix.View,

Types of polarisation of light

Linear polarization

Circular polarization− Same amplitude with 90 degrees phase difference.

Elliptical polarization− Different amplitudes with 90 degrees phase difference.

What are Polaroids?

Polarization of light can be obtained by passing unpolarized light through a thin sheet of crystal material. This thin crystal material is known as Polaroids or polarizers. The molecules in the polaroids are positioned in a particular direction, which is said to be the axis of the polaroids, which helps in allowing only those oscillated electric fields which are in line with this axis. Hence, producing a polarized light.

What are Polaroid Films?

Polaroid films are made up of organic materials having long chains of molecules or atoms that are aligned in a particular direction. In Polaroid films, the crystal material molecules are placed between two glass-like sheet substances. In making polaroid films, the crystal material we consider is quinine sulfate or herapathite which are placed between two transparent nitrocellulose polymer films. These crystals are then aligned by applying electric or magnetic fields in a particular direction giving the axis of the polaroids.

How light is polarized using polaroid film?

When an unpolarized light having a transverse electric field oscillating in all directions passes through the polaroid film, a polarized light wave oscillating in one direction will get transmitted out of the polaroid. The direction of transmitted polarised light depends on the direction of alignment of the crystal of atoms or molecules inside the polaroid film. This helps in reducing the intensity or brightness of the light which is used for many light applications. If $mathrm{I_{0}}$ is the full intensity of an unpolarized light passing through the polaroid films, then the transmitted light intensity from the polaroid will be I. Suppose the angle between the direction of polarized light to the axis of the polaroid is $mathrm{theta}$, then the amplitude of transmitted wave will be $mathrm{Ecos:theta}$. Here E is the amplitude of the electric field component. Then the relation between the intensity of unpolarized light to the intensity of transmitted polarized light is given according to Malu’s law as,

$$mathrm{I=I_{0}cos^{2}theta }$$

The direction of Polarization of Light

The direction of polarization of light is nothing but the direction of oscillation of the electric field after polarization. An unpolarized light where the electric field oscillates in all directions can be converted into polarized light, in which the electric field oscillates in one direction only. This process of allowing only one direction of EMW is achieved by using polaroids. Hence, polaroids can control the directions of light propagation. It means the direction of propagation of polarised light will be the direction of the polaroid axis on the film.

Uses of Polaroids

In sunglasses to reduce harmful sun rays falling on our eyes.

In headlights in vehicles control of the brightness of light helps in reducing the accidents to occur.

In cameras for getting better-colored pictures.

In trains and airplanes glass windows, where the polaroid films help in reducing the bright intensity of light passing through.


Q1. What are different methods for polarizing a light other than polaroids?

Ans. The polarization of light can be obtained by another process like light scattering, light reflection and by Nicol prism.

Q2. What is meant by a dichroic substance in polaroid?

Ans. In polaroids, dichroic crystals are used, which means these types of substances allow only a particular direction of oscillating waves and absorb the remaining.

This process where the substance selects one direction waves to transmit through It is called dichroism and such substances are called dichroic substances.

Q3. Are there any organic materials that can polarize the light on their own?

Ans. Yes, Liquid crystals are one of the organic materials that can polarize the light and transmit, since all the molecules inside the liquid crystals will be specifically aligned in one direction.

Q4. What is an analyzer in polaroids?

Ans. We can use two polarizers in the process of polarization of light. Analyzer acts as a second polarizer, that helps in finding out whether the light transmitted from the first polarizer is plane polarized or not.

Q5. Explain polarized light when polarizer and analyzer are perpendicular to each other?

Ans. Suppose the polarizer axis is parallel aligned, then from the unpolarized light only those oscillating electric fields allowed that are parallel in direction to the polarizer axis. After that, if we put an analyzer in which its axis is perpendicularly aligned, then no polarized light will pass through the analyzer. This is because the polarized light coming out from the polarizer is oscillating parallelly.

Learn How Do Kubernetes Services Work?

Introduction to Kubernetes Service

In Kubernetes, services are generally a group of pods on the cluster, it is a logical, abstract layer, and here all of the pods perform the same function. This Kubernetes service helps us to enable pods that provide a specific set of functions such as image processing, web service, and many more; this function is assigned a unique IP name and address. So that means if the service is running, that means the IP address will not change till then; also, in order to access the service, we have to follow its policies. In the coming section of the tutorial, we will discuss more about the internal working their implementation in detail for better understanding and clarity for the beginners.

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What is Kubernetes service?

As we have already seen about the service, it is a logical, abstract layer, which helps us to connect the sets of pods to the specified abstract service name and the IP address; let take a few points to understand the service in detail;

2) Helps us to connect a set of pods.

3) Kubernetes service helps us to connect our application frontend to its backend.

4) Services use selectors and labels, which helps us match the pods with the other application.

5) It consists of various types of an attribute; some of them are mentioned below;

a) Port definition

b) Label which helps us to connect to the pods

c) Port number and assigned cluster IP address.

d) Mapping of incoming ports to the out coming ports.

Also, in Kubernetes, we have different types of service, which can be discussed in detail in the coming section of the tutorial for better clarity for beginners to understand and implement it in a better way.

How do Kubernetes Services work?

In this section, we will see about the internal working on the Kubernetes service step by step so let’s get started,

1) First, it starts pointing to pods with the help of labels.

2) Also, the Kubernetes service is node-specific; it can still point to the pods, irrespective of where it is currently running in the cluster.

This will be clearer once we see the definition and creation of service in the next section of the tutorial.

Kubernetes Service Types

In this section, we will discuss about the different types of service we have in Kubernetes; first, let’s have an overview about each of them; later, we will discuss each of them in detail for better understanding in detailed explanation about each of them, so let’s get started to see below;

1) ExternalName: This service type helps us map the service to a predefined externalName filed.

2) ClusterIp: This type of service helps us to expose a service that can only be accessible with in the cluster.

3) LoadBalacer: this type of service helps us to expose the service with the help of a cloud provider.

4) NodePort: This type of service helps us to expose the service with the help of a static port present on each node IP.

1) Kubernetes ClusterIP service: This is the default service provided by Kubernetes; it mainly uses the IP address to expose the service. But it has one restriction here: it helps us expose the service with the help of an IP address, but it will be internal to the cluster. That means we can access the exposed service within the same cluster itself, not from outside that cluster. This can be sued when we do not want other external services to use our expose service, hence increasing the accessibility part here. In sort, we can say that it helps to expose the service on internal cluster IP if we choose this service, then we will only access the service with the cluster.

2) Kubernetes NodePort service: As this name suggests, this service type helps expose the service on every node port. That means it allows us to open ports on every cluster node. So it will navigate the traffic to every node of the service, even if the service is not running on running on that particular node, thus helping us to handle the traffic as well by navigating it to a different node. It is one of the high-level methods which can be used in development. If we want to connect to the NodePort from outside of any cluster, then we can use this format to connect to them;

3) Kubernetes ExternalName service: As the name suggests here, this type of service can be accessed by the external name assigned to them. Rather than access them via cluster IP etc. In short, if we want to access this service, then we have to use the externalName field, which we define when creating the service. It returns a CNAME record that contains the value of the externalName parameter. In this type of service, no proxy is set up.

Create a new instance Kubernetes service

As we already discussed, it is an abstraction layer that is used to define the set of pods; in this section, we will see how to create the Kubernetes service within a reference file; we can define service as a simple REST object, we can create all them, and POST a service definition to the server in order to create the new instance from it. Below is the definition by which we can define a service in the Kubernetes see below;

e.g. :

apiVersion: v1 kind: Service metadata: name: your_name spec: selector: app: name ports: - protocol: TCP port: 80 targetPort: 9376

As you can see, we are trying to define a service here, where we are defining name, version, posts, etc., defining it. Also, we need to mention what kind of REST object it is of use ‘kind’ keyword to define it line above syntax.

1) First, it assigns them in Service IP; the service proxy further uses this IP.

2) We also have a controller for service responsible for scanning the Pods that match the selector of the service. After matching, it sends any updates to that endpoint.

3) Default protocol used by the service is TCP.

4) With the help of service, we can expose as many ports on the service object it is supported by Kubernetes.


In this tutorial, we have seen all the steps needed to take regards to service in Kubernetes, with a detailed explanation about the attribute, components, and different types of service in Kubernetes; go through the whole tutorial it will give you detailed knowledge about the Kubernetes service which will be helpful.

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How Do Algorithms Work? A Basic Primer For Non

If you’ve been anywhere on social media in the past few years, you’ll likely have noticed an increase in suspicion amongst ordinary (read: non-marketing) people regarding algorithms, tracking, artificial intelligence, and machine learning.

The fear makes sense.

When you don’t understand exactly how something works, it can sometimes seem like negative forces are at play when you don’t get exactly what you’re expecting from those programs.

For example, President Trump regularly tweets implying that Twitter’s trending topics are biased against him.

Political and medical affiliations aside, the underlying issue is often that people don’t trust algorithms and machine learning because they don’t have a complete understanding of how they actually work.

So let’s go over a basic primer of how these work for things like search, social media, and other common technology applications we use daily.

Algorithms Can Still Be Biased

Before we really dig in, though, it’s important to understand that algorithms, machine learning models, and artificial intelligence can be biased by the programmers who develop them.

But, to be frank, they are often biased in favor of those in power or in the majority (as those are often the people creating the machine learning models – and aren’t aware of their own implicit biases).

Check out my other piece on Search Engine Journal about this here.

Along with the original inputs that affect how these algorithms work, the nature of ML and AI means that the inputs that users contribute also affect the outcomes (we’ll chat more about this in a minute).

This means that the machine learning models learn how we search and use social media and end up customizing our results based on that information.

That seems great when we can find the exact pizza recipe we were looking for, but it’s less great when we’re searching for critical information and don’t get unbiased answers from our information sources.

How Algorithms Work at a Basic Level

The point behind algorithms and machine learning on the web essentially is to replicate the decision making processes of the human brain – without we humans having to take in all the information and time needed and sort through it on our own.

It’s supposed to be a shortcut to the human thinking process almost.

At the most basic level, algorithms are a bunch of if-then statements taking place in a computer very quickly to give you an outcome: If you do A then you get B. If you do C instead, then you get D.

Say you ask an acquaintance, “Where are you from?”

Based on their answer, there are certain options that will be your go-to responses.

If they say they’re from your childhood hometown, you’ll have a much different response than if they say they’re from a place you’ve never been to before.

This is a simplified version of how an algorithm works.

When you search for something on Google, the same sort of thing happens.

You may search “Chicago pizza” and based on the information Google has about you, your location, and your search history, it may give you a recipe for Chicago pizza or tell you what restaurants serve pizza in Chicago.

What Is Machine Learning & How Does It Work?

The most basic idea behind machine learning is that the inputs you enter can affect the future recommendations or outcomes of the algorithm.

At the most fundamental level, the algorithm “learns” your preferences and takes them into account during your next use of the if-then statements.

One example of this is what shows up in places like Google News or even your Facebook recommended pages to like.

Based on the way you interact with these sources, the algorithms try to show you more of what it thinks you prefer.

For example, if I follow a bunch of animal rescue pages (that categorize themselves as such on Facebook), the algorithm “learns” that I really care about adopting dogs.

So when Donald Trump accused the news of being biased, he likely doesn’t understand that a lot of the news results he sees are personalized based on what the algorithm has learned of his online behavior.

Algorithms Aren’t Trying to Trick You

While we’re probably closer to iRobot than ever before, your search engine results are likely not purposefully engineered to trick you or distort reality.

And oftentimes the results we get are purely math-based.

For example, I saw a Facebook post from someone who was convinced that, because you can search for any 3-digit number with the keyword “new cases,” and Google will show you a result for that exact number and new COVID cases – that those numbers were inherently false.

However, this case just demonstrates statistically that there are so many information sources publishing data at such high rates that there are enough pieces of information on the web for Google to find results for any of those numbers.

Statistically, if every location-based entity (towns, cities, counties, states, regions, provinces, countries) releases COVID numbers at regular intervals (daily, weekly, monthly, quarterly), it’s inevitable that there will be 1-, 2-, 3-, 4-, and even 5-digit COVID news results when you search that number and “new cases” on Google, Bing, or any search engine.

All that typing any number into Google and “new cases” really proves is that algorithms can “read” and “understand” news-release data from websites based on the stored information in the search engine’s library of webpages and regurgitate it back to searchers.

Especially because it would exactly match your search question and the search engine assumes that’s what you’re looking for.

It’ll think it did a great job getting you exactly what you said you needed.

From this perspective, search engines and social media are more of a “good boy” bringing the stick you threw back to you as opposed to a criminal mastermind trying to steal your freedom and take all your money.

So, it does not prove a conspiracy theory just because you can find info on something online (or if you can’t!).

But Marketing Does Affect Results

The thing about search engines and social media is that the results served up are made by other humans.

While more technology is working to verify results (like the fact-checking on Facebook), anyone with a basic knowledge of search engine optimization or social media marketing has the opportunity to influence those results.

This fact is just important to keep in mind as you peruse results.

Marketing plus that personalization data means that modern tech platforms will do their best to profit off you as a user.

This is why it can sometimes feel like you’ll think about something and get a Facebook ad for it later in the day.

Just a basic understanding of how algorithms, machine learning, and marketing personalization works can help you be a more informed consumer of content on the web.

By keeping in mind that these processes are often just if-then programs informed by your stored preferences, we can help fight misinformation about tech – and get more searchers and social media users involved in how to make them better moving forward.

More Resources:

Image Credits

All screenshots taken by author, August 2023

Twitter Blue Launches In United States

Twitter Blue launches in the United States and New Zealand after being introduced in Canada and Australia earlier this year.

“We are excited to share that Twitter Blue is now available in the United States and New Zealand across iOS, Android and web. Twitter Blue is available for a monthly price of US$2.99 / NZD 4.49 and with it, we’re bringing subscribers even more features, more content, and more ways to participate in the conversation.”

The subscription price in Canada and Australia, which is $3.49 CAD or $4.49 AUD per month, remains unchanged.

With this wider rollout Twitter is introducing more features for subscribers which will allow them to get even more out of their experience on the desktop site and mobile app.

What Do I Get With A Subscription To Twitter Blue?

A subscription to Twitter Blue grants access to the following features:

Ad-free articles (formerly known as Scroll): On iOS and desktop, Twitter Blue members can access fast-loading, ad-free articles when they visit news sites from Twitter, such as The Washington Post, USA TODAY, The Atlantic, The Daily Beast, Rolling Stone, BuzzFeed, Insider, The Hollywood Reporter, and Search Engine Journal.

Top Articles: Subscribers can see the most-shared articles in their network over the last 24 hours.

Undo Tweet: Subscribers can preview tweets before they’re sent, giving them the chance to undo the tweet if there’s an error.

Early Access to New Features: Subscribers get early access to new features Twitter is testing before anyone else.

Twitter is still not giving users a much requested edit button, but the Undo Tweet feature will give you 30 seconds to reconsider publishing a tweet after sending it.

How Do I Subscribe To Twitter Blue?

People in the US, Canada, Australia, and New Zealand can subscribe to Twitter Blue through the main menu on desktop and the mobile app.

Subscribing to Twitter Blue is a simple, two-step process.

While logged into your account, look for the Twitter Blue icon in the left navigation menu.

Tap the icon and then tap the subscribe button that appears at the bottom of the next screen.

Note that the screenshot below shows the Canadian price because I live in Canada, so yours may look different.

Your subscribe button will show the price you pay in your location.

After tapping the subscribe button you’ll be asked one last time to confirm your subscription before your method of payment is charged.

What Happens To Ad Revenue For Publishers?

A portion of the revenue from subscription fees goes directly to news publishers.

Twitter Blue’s ad-free articles feature is designed for publishers to not lose revenue, the company says:

Featured Image: Marcelo Mollaretti/Shutterstock

Verizon Router Yellow Light? Try These Fixes

Most Verizon customers won’t have to deal with yellow lights regularly, which means they can be a bit perplexing when they appear. While a yellow light might indicate a problem with your connection, it doesn’t necessarily mean you’ll be without internet for a significant time. Often you can fix the issues a yellow light indicates with a few easy steps. 

A yellow light on a Verizon router means there’s some kind of problem with the service. The internet isn’t being delivered as it should be, even if you can still get a connection on your PC. However, most users with a yellow light may find they have to do any online troubleshooting on their phones since devices using Wi-Fi probably won’t connect during that status.

A solid yellow light means that you need to start digging into the root of the problem so you can restore your Verizon internet service. 

A blinking yellow light doesn’t necessarily indicate a problem with your internet connection. Instead, it can measure how well connected you are to your internet range extender. The faster it blinks, the better the link – but that doesn’t mean it’s set up right.

The blinking yellow should get faster as you move the extender in range. Once it’s close, the light will go solid until it’s done connecting to the extender. So if you’re in the process of setting up a range extender and that’s when you’re seeing the yellow light – just move the extender closer until the flashing stops.

Once everything is solid, just wait for the light to turn white, and it will be paired with the extender. 

Before troubleshooting your router, ensure the problem is on your end and not with Verizon. Sometimes the light will turn yellow because an accident or weather-related incident caused the service to stop. Other times, Verizon is upgrading and repairing the network, leading to a temporary outage. 

Most problems solvable at home will require a hard or soft reset of the router itself unless you’re experiencing a hardware issue that requires new equipment. 

Before troubleshooting your router, check with Verizon to see whether the network works.

If there’s no issue with your connection, it’s more likely the problem is at home. Your next step should be to try to fix your hardware so that you can get back online. 

Soft resetting your Verizon router means ending the connection and then reestablishing it. Nothing changes in your router or network settings. 

Each device may take a few minutes to fully connect to the network. Don’t rush the process by plugging in the router before the modem is up and running. Doing so might cause you to have to repeat the steps.

You won’t have to unplug two devices if you have a combination modem and router. Instead, you’ll just perform these steps on the setup you have. The principle is the same no matter what configuration you’re using. 

Sometimes networking cables are a hidden source of network issues. The cable that connects your router to your modem – or the cable connecting the modem to the wall – could be the suspect causing the yellow light.

Credit: Verizon

If you have compatible cables lying around, try using them in place of the original wires. You can perform the steps to soft reset the router and modem again. This time, though, replace the cables before plugging everything back in. 

If the yellow light goes away and the router appears to be working again, a damaged cable may have been at fault. Throw away the old one and plan to get a replacement if you can’t use the cable you plugged in for testing. 

Sometimes your router’s configuration is what prevents it from connecting to the network. Doing a hard reset that wipes any personal changes and returns it to its factory state can help restore service when these changes are the cause of the yellow light.

However, you will have to restore any changes you made in the router’s online settings. It requires signing into the portal for your Verizon router and repeating any steps you did the first time around. For example, if you had the router set up to log activity or prioritize service, these steps must be repeated after the hard reset.

If there’s any chance the yellow light is caused by a service outage on Verizon’s end, wait to do the hard reset, so you don’t have to reconfigure the router for nothing.

If the yellow light is still there and you’ve verified there are no service outages, reach out to Verizon. A service technician may be able to help you figure out exactly why your service isn’t working correctly. 

Sometimes you can get a bit more information about the problem you’re facing if you check Verizon’s ONT. This is the box they route service through and may be located outside the house, in the basement, or in another location. If you aren’t sure whether you have an accessible one, you can talk to a Verizon tech.

Some users recommend hard resetting the ONT by unplugging it from its power supply or pressing the reset button. If you’re comfortable with networking devices and know where to access the ONT, this is another solution that might fix the yellow light on your Verizon router.

However, if you have to unlock a box or unscrew anything to access it, it’s better to reach out to Verizon and get help. 

Many customers choose not to use Verizon’s router when they sign up for service. As long as the router you choose is supported by Verizon and rated for your select speed, it should work to deliver internet to your house.

If you use a different model router, the yellow light might mean something else entirely. Each manufacturer and model has its own setup with its own set of indicative lights. Check the manual for your device if you aren’t using a router direct from Verizon. The yellow light you see could mean something entirely different. 

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