Three biometric scanners in the Galaxy S8: what are they for and how do they differ? The eye scanner in Samsung smartphones is sick with excessive gullibility  Samsung s8 irises do not work

Samsung continues to sell worldwide and users are starting to complain about Galaxy problems S8. New problems emerge almost daily. With that in mind, below we provide a list common problems problems that you may encounter and how to fix them. These solutions also work for the Galaxy S8 Plus.

Samsung Galaxy The S8 is available for sale in less than a month, which means more problems will appear in the near future.
It is still a worthy replacement for the older ones and just needs to take some issues into account. We will look into the top complaints and suggest fixes and other solutions to the problem.

This is an impressive smartphone that has a lot to offer its users. It has an amazing Infinity Edge screen with tiny bezels, a ton of performance, and a great camera. But just like all flagship smartphones, it is not perfect.

How to fix fingerprint scanner problems Galaxy fingers S8?
The first and most a big problem Galaxy S8 for most users - the location of the fingerprint scanner. It's location is just terrible. The scanner is located on the back of the smartphone, but not under the camera. To make matters worse, the Galaxy S8 and Galaxy S8 Plus are larger than most flagship smartphones, which puts the scanner out of reach of most users.

Unfortunately, there is no real way To fix this problem, owners just have to get used to the new position of the scanner. Muscle memory will make you look for a home button that no longer exists. The only real solution is to carefully configure the scanner, which will help accurately read the fingerprint.

For example, after installing the cover, the scanner may be less able to recognize fingerprints. Delete the saved prints and repeat the setup with the case, making sure to follow the on-screen instructions during this process. Changing angles, finger direction and other tweaks can give you better results.

The scanner is not a button, there is no characteristic click during scanning, so you never know if you hit the camera instead of the scanner. As a result, the camera lens quickly becomes stained.

How to fix the face and iris scanner?
Luckily, Samsung provides several different ways biometric unlocking of the device to compensate for the poor placement of the fingerprint scanner. You have access to a facial recognition system and an Iris scanner, which we saw on Galaxy Note 7.

The Iris scanner works at night, through glasses, and at larger angles than on the Galaxy Note 7. However, in the comments, users claim that none of these methods work well enough. If you are having problems, we recommend deleting your Iris scanner settings and setting it up again. Try to open your eyes wide the first time to ensure better reading.

With facial recognition, things are even worse. Some users love the feature, while others find it useless and complain that facial recognition doesn't work. A photo of your face can also fool the system. Therefore, be careful if this is your only method of unlocking your smartphone.

Instead of using your face, we recommend using a feature called "Smart Lock". It uses GPS to save trusted locations, like at home or work, and your voice and your Bluetooth accessories can also unlock the Galaxy S8 automatically. This way, when you are at home, your smartphone is not blocked. All you have to do is leave home, and your smartphone will be blocked. This solution allows you to interact with phone scanners as little as possible.

Go to Settings - Lock screen and security - Smart Lock and turn on the feature. Then set up your location and connect your Bluetooth devices to better work functions.

How to fix Galaxy S8 apps not full screen?
Another big problem that we continue to see complaints about is apps that don't go to full screen mode. With a large 5.8" or 6.2" Quad HD screen, some applications may not be able to utilize all the space. This is due to the aspect ratio, similar to 16:9 widescreen cinema, which introduces black bars. Luckily, you can fix this quickly and easily.

So far, most applications have worked great and scaled, but some don't. If so, follow these steps to fix this issue.

Pull down the notification panel and go to Settings (gear icon in the upper right corner);
Find and select "Display/Screen";
Select the "Full screen applications" option;
Find any application that is not highlighted and switch it to full-screen mode;

Now the application will automatically scale to the new 18.5:9 aspect ratio and fill the entire screen. Some of them may not look right, but almost all the apps we saw appeared fine. Alternatively, owners can tap the Recent button and tap Expand (green icon) to instantly switch to full-screen mode for that app. If it is needed.

How to fix Galaxy S8 Wi-Fi problems?
Countless reports have confirmed Wi-Fi issues on the Galaxy S8 and Galaxy S8 Plus. Owners mention poor connection performance, disconnects and speed dips that prevent them from even loading a website until the smartphone disconnects from Wi-Fi. We see these problems with almost every smartphone that comes to market.

If you encounter Wi-Fi problems on Galaxy S8, we recommend resetting your home router or modem first. Better yet, drop it network settings default. We found that unplugging the router for 10 seconds or so and then starting it up will allow your smartphone to connect. Try going to Settings - Connections - Wi-Fi and reset your wireless network. Then connect again, enter the password and connect again.

If you used Samsung feature Smartswitch for transferring data from an old smartphone, Wi-Fi information is also transferred and new Galaxy The S8 will connect automatically. If this is your case, we strongly recommend that you reconfigure your connection manually.

How to get back the app tray on Galaxy S8?
We not only lack a physical Home button like everyone else Samsung smartphones for the past seven years, but the Galaxy S8 does not have a shortcut for the app tray. How to find and open all your applications?

Instead of wasting home screen space with a dedicated white button, Samsung created a gesture for the app tray. Simply swipe anywhere on the bottom of the screen to open the app tray. This is a functional change at the phone software level.

You can fix the situation, though. Pinch any free space on the screen. The desktop will be reduced in size, indicating that you have entered editing and page layout mode, as well as rearranging widgets and background images. Click on the “Settings” button (gear). Now go to the “Apps Button” option and select “Show Button”. Now accept the settings and go back. You will see a familiar button at the bottom of the screen, it will open the application tray.

Samsung even added a Home Screen Only option if you want all your apps to remain on your home screens, just like on the iPhone. Try this solution, you will be able to create folders to keep the interface clean.

How to fix red screen tint on Galaxy S8?
Some users, mostly from Korea, have raised the issue of a red tint on the screen that distorts colors. This is not a hardware issue that will require replacing the phone, a software update should fix it.

As you can see above, two smartphones have a reddish tint while one smartphone shows a normal White screen. This is a calibration problem in one form or another, since then Samsung has updated the phone software, offering users a large number of options to customize the screen as you wish. The update is already available in Russia for Galaxy users S8.

Go to Settings - Display - Screen Mode and select a new color mode. Additionally, you can adjust color balance to complete screen color adjustments, including tone and white balance. This is the only way to get rid of the red tint on the Galaxy S8 screen.

How to change screen resolution on Galaxy S8?
Another problem is that the Samsung Galaxy S8 comes with a QHD screen (2960 x 1400). Higher than most Full HD (1080p) TVs. However, Samsung lowers the default resolution to 1080p for daily use. The manufacturer did the same with the Android 7 Nougat update for the Galaxy S7.

This is a solution that is almost invisible to the user, however, it improves the performance of the smartphone and the time battery life. Most users will not be able to distinguish between QHD and Full HD (1080p) on their phone. However, if you want the Quad HD you paid for, the resolution is easy to change.

Just go to Settings - Display - Screen Resolution and move the slider all the way to the right to WQHD+ for the best screen image.

How to fix wet speaker problems on Galaxy S8?
Like its predecessors, the Galaxy S8 and S8 Plus are IP68 certified, meaning they are protected from water and dust. This means that you can lower your smartphone to a depth of up to two meters for a maximum of 30 minutes. It is protected from damage without plugs covering the ports, no covers for you.

If the Galaxy S8 gets wet, the speakers may sound funny for a while, but water can't cause long-term damage to your smartphone's sound.

Samsung uses a specialized coating on the inside of the speaker and its surface to keep water out. If the speaker doesn't work or sounds bad after getting wet, just let it dry. There is a specialized screen behind the speaker grille, but sometimes just a little water gets on the speaker.

Try shaking the phone, blowing lightly on the speaker grille, or blot your side of the phone to collect any remaining water. Once the speaker is dry, it will work normally.

How to fix Bluetooth problems on Galaxy S8?
Even though this is the first smartphone with Bluetooth 5.0, which covers four bands, fast pairing and connects two devices at the same time, we see tons of complaints about Bluetooth.

Several users point out that the Galaxy S8 does not even see their devices, which makes it impossible to connect them to the smartphone. Reminds me of old CDs that were sometimes unreadable. Sometimes the problem is a very poor connection. We're seeing a flood of complaints on the Samsung forum, but no solution in sight.

One of the participants suggests turning off the Galaxy S8 and your Bluetooth accessory. Turn them back on, remove any connection (pairing) and reconnect to your headphones, speaker or car. Often, a simple reboot is enough to fix Bluetooth problems. Users can also head to Settings - Applications - Bluetooth Search and clear the cache. This solution will remove all pairings, which helps some users.

If you continue to experience problems with Bluetooth, you may have to wait for a software update.

How to fix problems Galaxy cameras S8?
Have you received a "Warning, Camera Failure" notification on your Galaxy S8? Some users complain about this issue and then close the camera app instantly. So you can't take photos.

Just like last year, the smartphone offers a feature called "Smart Stay", which may cause errors. It uses the device's sensors to keep the screen on while you're looking at it. Unfortunately, this feature again interferes with the camera's performance. Head to Settings - Advanced Features and turn off Smart Stay.

We also encountered this issue: The Galaxy S8 camera app closes and displays a warning that the temperature is too high.

This is quite common in a hot car in the summer, but you shouldn't experience any problems when photographing indoors. This should not happen under other conditions. If you have encountered similar problems, write to us.

The other problem is with Vision. A big selling point of the Galaxy S8 is the built-in assistant, which also uses the camera to find information about the subjects you're shooting. For most, the function does not work at all or occasionally. We've retired this feature and hopefully an update in the near future will make the assistant more useful.

How to fix slow charging or wireless charging?
Samsung Galaxy S8 won't explode? After the Note 7 problems, this question comes up quite often. We can't say 100%, but most likely new flagship completely safe. Samsung includes 8 battery test points and thoroughly tests its phones before release.

However, you may feel that the smartphone gets a little warm while charging. Other charging complaints include slow speed charging Galaxy S8. I use a cover so I don't feel the heat like others do. If you play games or perform time-consuming tasks, your smartphone may also become warm.

Additionally, Galaxy S8 owners who are concerned about heat while charging can head to Settings - Battery and turn off the "Fast cable charging" option, which uses Quick Charge 2.0 and Samsung's adaptive charging. This means that the smartphone will not charge from 0 to 50% in 25-30 minutes, and a full charge will require more than two hours, but it will not heat up much. If your smartphone charges too slowly, make sure you use a special adapter that comes with your smartphone and a high-quality USB Type-C.
Owners can't just use a USB Type-C cable with an old one charger, as it does not supply enough power to enable fast charging. Remember, if you need extra power, buy the appropriate accessories.

When talking about charging, many reports went through a quick wireless charging, which simply doesn't work for some users, even in the forum panel fast charging from Samsung. We suspect that the update will help fix this issue, perhaps Samsung is limiting the fast charging functionality of some charging pads to keep the smartphone's temperature normal. We'll update this section when we learn more.

How to reset frozen Galaxy S8?
If your phone freezes, you can perform a manual reboot. This will help solve minor random phone problems. Whether it's screen glitches or screen orientation errors, freezing apps or other minor problems, a quick reboot often solves them.

Owners can easily reboot the smartphone by long pressing the power button followed by tapping Restart. The phone will shut down and restart, allowing you to function as intended.

We have prepared a separate article for a hard reset. Press and hold the Power and Volume Down buttons for about 7-8 seconds until the Galaxy S8 vibrates and reboots. This will fix almost any minor Galaxy S8 problem.
Speaking of reboots, it seems that some users are facing the issue of Galaxy S8 randomly rebooting. In case the smartphone simply reboots without visible reasons. Judging by over 100 comments on the Samsung forum, this is a fairly common problem. The company is aware of this, and some users say that removing the MicroSD fixes the situation. We recommend formatting the SD card and trying again to check whether the reboots succeeded or not.

Galaxy S8 and the “DQA keeps stopping” message is another common problem that users complain about. An unusual error that appears on some devices. The problem may be resolved after a reboot. The culprit is the "device quality agent" service, which scans Wi-Fi devices. Samsung has reportedly fixed this issue with a back-end update using the Galaxy Apps Store. The update helped some users fix the error.

How to reset Galaxy S8 to factory settings?
Last but not least, restore your phone to factory settings. It deletes all user data, apps, messages and other contents on the phone. So use this solution as a last resort. If you are having any serious problems with your Galaxy S8, try doing a factory reset.

This good way prepare your smartphone for installing new software as upcoming Android update A. Users can then use the SmartSwitch feature to automatically restore the device settings. Go to Settings - General Settings and click Reset.

The whole process will take a few minutes, will restore the original software, like on a smartphone out of the box, deleting everything. Galaxy S8 owners can use Samsung SmartSwitch or Google Restore to get all their apps and settings back. Again, this is a last resort.

In conclusion, the Galaxy S8 remains a new smartphone that has been available for less than a month. The more users buy it, the more new complaints we expect. Samsung's slow update process may fix some Galaxy S8 issues, otherwise, come back to this article and we'll update it for more issues. Write to us if you have any problems, we will do our best to help.

It turns out that the iris scanner in the Samsung Galaxy S8 smartphone can also be fooled. And the procedure for bypassing the biometric identification system itself does not require the use of any expensive and high-tech devices, reports Motherboard.

This was reported by members of the German data protection community Chaos Computer Club. They also published instructions on how to bypass the iris scanner in the Samsung Galaxy S8 smartphone.

As hackers found out, to unlock it, it is enough to take a digital photograph of the eye in night mode or by turning off the infrared filter on the camera.

After some minor processing, which may include changing brightness and contrast, the photograph of the eye should be printed on laser printer(the authors of the study ironically note that they managed to achieve the best result using Samsung printers).

In the last stage, the hackers placed a contact lens on the photo to imitate a real eye, and the phone perceives this image as a real eye. After this, the iris biometric identification system of the Samsung Galaxy S8 capitulated.

Chaos Computer Clubs participants note that in this way you can access the Samsung Pay payment service.

“If you value the data on your smartphone or want to use it to make payments, then using a traditional PIN is a more secure approach than biometric authentication,” said CCC spokesman Dirk Engling.

As stated on the Samsung website, the iris scanner is one of the most secure systems biometric identification, since the iris cannot be copied as easily as a fingerprint. Previously, we already knew that this phone model was able to be unlocked simply by holding up the phone with a photo of the owner of the smartphone.

Samsung later commented on the demonstrated method of bypassing the iris scanner:

“The company is aware of this message. Samsung assures users that the iris recognition technology in the Galaxy S8 was developed and implemented after rigorous testing to ensure a high level of scanning accuracy and prevent unauthorized access attempts.

The method described in the material mentioned can only be implemented using complex technology and the coincidence of a number of circumstances. You need a high-resolution photograph of the retina taken with an IR camera, contact lenses and the smartphone itself. An internal investigation found that achieving results using this method was incredibly difficult.

However, even if there is a potential vulnerability, the company’s specialists will make every effort to ensure the security of users’ confidential and personal data as soon as possible.”

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Samsung has packed a crazy amount of features into the Galaxy S8 and S8+. This is nowhere near the insane level of software bloat we've seen on some Samsung devices. You could spend hours clicking through the menus, hoping to stumble across all the cool things this phone can do. Or you can read this guide to learn all the secrets, everything about best advice and Galaxy S8 settings to get the most out of your new smartphone.

Watch the video review of the Galaxy S8 and S8 Plus:

Customize navigation buttons

Samsung has finally caught up with the times and moved to on-screen navigation buttons, meaning you can customize them to your liking. The default layout is similar to others Samsung phones, with a Back button on the right and a Browse button on the left. You can change it to standard Android layout back-home-overview by selecting Settings > Display > Navigation Bar. Here you can also change the background color of the navigation bar. Remember, the Home button is pressure sensitive. It works with firm pressure even when the display is off. At the bottom of the navigation bar menu, you can change the level of pressure required to trigger the button.

Set up or turn off Hello Bixby

Samsung's smart assistant Bixby isn't very smart yet, so you probably won't use it. At the same time, when you press the physical Bixby button, a screen called “Hello Bixby” appears. You'll also find this screen to the left of the main Home screen panel. It's a bit like Google Now, but not as good. You can customize Hello Bixby to show information more useful to you—by default, it has things you don't want, like random Giphy animations and suggested themes in the Samsung store. Click the gear icon in the top right corner to edit cards and customize what they display. If you don't want to use Bixby on your home screen, you can enter edit mode by pressing and holding the spacebar, then turn off the switch above the Bixby panel.

Get rid of icon frames

The icons on the Samsung home screen, all of them are “squircles” and third party applications, which you install will be encased in white squircle frames. It's consistent, but not very attractive. To get rid of icon frames, go to Settings > Display > Icons. Change it to "Icons Only" and you're done.

Read also:

Galaxy Note S8 will look bright and unexpected

Reorganize applications

The default sort in the Galaxy S8's apps folder is "custom," which is a fancy way of saying "you'll never find anything." You should immediately change it to alphabetical order by opening the folder, clicking the menu button, and selecting Sort. Unlike previous versions of Samsung's Home screen, the apps folder will remain in alphabetical order even when you install new apps.

Faster unlocking via iris scanner

Samsung decided to put the Galaxy S8's fingerprint sensor in a really awkward spot on the back of the phone, so you'll want to familiarize yourself with the iris scanner. It works surprisingly well, and you can make it even more convenient to use with a few tweaks. You can add Iris Scan in Settings > Lock screen & security > Iris Scan. Make sure Iris unlock is turned on so you can unlock your phone by looking at it, then turn on Iris unlock when screen turns on. In this mode, you don't have to swipe the lock screen to enter iris scanning mode. Just wake up your phone by looking at it and it will immediately unlock.

Selecting display calibration mode

The Galaxy S8 and S8+ have several display calibration modes available in the settings. The default calibration is a responsive mode that includes custom color sliders to adjust colors to look the way you want. Some GS8 owners find the display too red, but you can change this using the sliders. There are also AMOLED Photo, AMOLED Cinema and Basic modes. Basic mode offers the most accurate colors of the sRGB specification, while Adaptive has a wider color gamut.

Changing the default volume level

When you press the volume key, the default action is to change the ringer volume. How often do you need to change it? Changing the media volume is more useful and you can set it to default. Just go to Settings > Sound & Vibration. There you will find "Default Volume Control". Tap it and select Media.

Set up Always-on display

Samsung's Always-on display feature allows you to see basic information about your phone without waking you up. This feature drains your battery a bit, so either turn it off or adjust it to make the battery drain more worthwhile. Always-on display appears in Settings > Lock screen & security > Always-on display. The display style can be changed to different clock, calendar, photo or minimal clock on the edge. On the other hand, Always-on display does not always have to be turned on. At the bottom of the settings screen is a toggle for "Always-on display". Disable it and you can set a schedule to turn it on and off.

Read also:

Hackers are preparing a jailbreak for iOS 8.4, iOS 8.4 and iOS 9

Editing the Edge panel

There is no flat version of the Galaxy S8, so it's time to make friends with the Edge Screen. It's a small tab on the right edge of the screen that shows you various shortcuts and tools when shooting. You can customize what you see on the edge screen by tapping the gear icon at the bottom or going to Settings > Display > Edge Screen. The Edge screen can be turned off if you don't want to use it, but set up Edge Panels first. There are almost a dozen panels by default, including a handy clipboard manager and weather. Don't forget to click the menu button in the top right corner to rearrange the panels and edit the Edge Screen. You can make the panel larger, smaller, more transparent, or even change its location.

Improved multitasking with Snap Window

The Galaxy S8 runs on Nougat, so it uses standard multi-window Android system. However, Samsung has added a small bonus in the form of Snap Window. You'll find the Snap button right next to the split-screen button on the app cards in the multitasking interface. Tapping lets you define a section of your app that will remain at the top of the screen while you use the bottom section for another app. This perfect solution to stream videos in Snap Window as it takes up less space and will continue playing even if it loses focus.

The flagship smartphone Samsung Galaxy S8 received not only a fingerprint sensor, but also an iris scanner, which, according to company representatives, is a more reliable means of biometric identification of the owner. However, representatives of the German hacker community Chaos Computer Clubs (CCC) managed It is relatively easy to fool the scanner of a Samsung device.

As hackers found out, to do this, it is enough to take a digital photograph of the eye in night mode or by turning off the infrared filter on the camera. After a little processing, which may include changing the brightness and contrast, the photo of the eye needs to be printed on a laser printer (the study authors ironically note that they were able to achieve the best results using Samsung printers), and then place a regular contact lens on the pupil and show the photo to a smartphone scanner to unlock.

“If you value the data on your smartphone or want to use it to make payments, then using a traditional PIN code is a more reliable approach than biometric authentication,” said CCC spokesman Dirk Engling, recalling that the Samsung Galaxy S8 iris scanner can be used to authorization in the Samsung Pay system.

A short video demonstrating the effectiveness of the method of deceiving a smartphone scanner was published on YouTube.

Samsung later commented on the demonstrated method of bypassing the iris scanner. As stated in the company's message received by NEWSru.com, the described method can only be implemented using sophisticated technology and subject to the coincidence of a number of circumstances.

“You need a high-resolution photograph of the retina taken with an IR camera, contact lenses and the smartphone itself. During an internal investigation, it was found that it is incredibly difficult to achieve results using this method,” Samsung noted.

The company also said that the iris recognition technology in the Galaxy S8 was developed and implemented after rigorous testing to ensure a high level of scanning accuracy and prevent unauthorized access attempts, and promised to make every effort to ensure the safety of user data.

Let us recall that previously a group of computer security specialists from the University of Michigan had a simple way to hack the fingerprint scanner that many people are equipped with. modern smartphones using a conventional inkjet printer.