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How to fix your Samsung Galaxy S7 Edge that has difficulty opening an app and fingerprint scanner that won’t work [Troubleshooting Guide]

Apps issues are sometimes limited to the apps that are actually having problems but there were cases we’ve encountered in the past wherein some similar concerns were actually rooted in the firmware especially if the apps in question are pre-installed.

In this post, we will be tackling app-related problems that might be deeply rooted into the firmware with the Samsung Galaxy S7 Edge being the subject of our troubleshooting. Aside for apps issues, we will also look into the fact that they’re accompanied by a problem with the fingerprint scanner that can no longer recognize the user’s prints. All these things reportedly occur after an update so we also have to take into consideration that maybe it’s the firmware that has problems.

Continue reading below as this post maybe able to help you fix your problem. However, if you are trying to find a solution to a different issue, then visit our troubleshooting page for we have already addressed hundreds of problems with this device since it was released. Try to find issues that are similar with yours and use the solutions and troubleshooting guides we suggested. If they don’t work, however, contact us by filling up our Android problems questionnaire. Just give us information and we’ll help you find a solution.

Galaxy S7 Edge unable to open an app and fingerprint scanner not working

Problem: Hey, I am having problems with my Samsung Galaxy S7 Edge. Let me tell you how it started. I was trying to retrieve lost contacts so I read to tap on the builder in settings until the developer options appeared and debug my phone. After I did that my phone started saying unauthorized actions have been detected restart you phone to prevent any unauthorized changes also my fingerprint scanner won’t work and S health says because of a new security policy, Samsung health can’t be opened on a rooted device.(0x100070591). I have not tried to root my device nor do I want too. I don’t know if I did something to my phone or if it’s the update. Any help will be greatly appreciated.

Solution: If you are certain that the device has not been dropped or soaked in water, it’s not far that this is caused by software-related problem. As you stated that the S Health app can’t be opened, it is because it might have crashed for some unknown cause. But the good thing is, if this is purely software issue there are some ways that we can do to try to resolve it. Just follow these procedures:

Step 1: Force reboot your phone

Since the battery of the device can’t be removed, this method that you should do is the equivalent of the battery-pull procedure, wherein it refreshes the memory of the phone and eliminate or close all unused apps that may be caused the issue to occur. So, if the problem triggered by a system glitch, then forced reboot will surely fix it. Just press and hold the Power and Volume Down keys together for 7-10 seconds until the device reboots. After doing so, try to use it again and observe if the problem still persists. If it is, proceed to the next step.

Step 2: Clear the Cache and data of the app that has an issue

Usually, due to new system has been installed there is a chance that the files and data of the app might be corrupted. So, what we have to do now is to bring back the app to its default settings so that next time you will launch it again the caches and data  are all new and could run perfectly to the system. This is how to do the procedure:

  1. Go to Settings
  2. Tap Applications
  3. Tap Applications Manager
  4. Navigate by swiping left or right, make sure you are in ALL tab
  5. Then swipe down and locate the app that has an issue, then tap on it.
  6. Tap Clear cache
  7. Tap Clear Data
  8. Go back to Home screen and launch it.

Step 3: Restart in Safe mode

After you do the forced reboot and the resetting of the app that has some problems but the issue remains unresolved, then there might be some third-party apps that’s causing. In this step, I will walk you through in bringing your phone to boot up in Safe mode, a diagnostic environment wherein all third-party apps are temporarily disabled. So, while in this state launch the S Health app and see if it will crash. Here’s how to boot your phone in Safe mode:

  1. Turn your Galaxy S7 Edge off.
  2. Press and hold the Power button.
  3. Once the ‘Samsung Galaxy S7 Edge ’ logo appears, release the Power key and immediately press and hold the Volume Down button.
  4. Continue holding the button until the phone finishes rebooting.
  5. Once you see the text “Safe mode” at the bottom left corner of the screen, release the Volume Down button.

While in this mode let the device run for a few hours to see if the problem still persists. If so, your phone might have a serious firmware issue and we recommend that you should perform the next step.

Step 4: Reboot your phone up in Recovery mode and wipe cache partition

There are two types of caches in your phone; the apps caches created by the firmware to make apps run smoother the next time you open them and the system caches that are used by the firmware to make its overall performance buttery smooth. In this step, we’re going after the the latter as they have greater impact on the overall performance of your phone.

During a firmware update, there’s a tendency that some of the system caches get corrupted or become obsolete and if the system continues to use them, problems like this may occur wherein built-in apps won’t run and basic functions and features won’t work. Here’s what you have to do about it:

  1. Turn off your Samsung Galaxy S7 Edge.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 Edge shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe cache partition.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished wiping the system cache partition. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

Step 5: It’s time to reset your phone

But if all procedures were unable to resolve the issue, then it is the firmware itself has the problem and your last resort is to perform a reset on your phone. Meaning, you will bring it back the device to its original form or factory settings to make sure that all files and data will be deleted. But prior of doing so, try to create a backup to all important files you saved on your phone because all of it will be wiped out. Follow these steps:

  1. Turn off your Samsung Galaxy S7 Edge.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 Edge shows on the screen, release the Power key but continue holding the Home and Volume Up keys.
  4. When the Android logo shows, you may release both keys and leave the phone be for about 30 to 60 seconds.
  5. Using the Volume Down key, navigate through the options and highlight ‘wipe data / factory reset.’
  6. Once highlighted, you may press the Power key to select it.
  7. Now highlight the option ‘Yes — delete all user data’ using the Volume Down key and press the Power button to select it.
  8. Wait until your phone is finished doing the Master Reset. Once completed, highlight ‘Reboot system now’ and press the Power key.
  9. The phone will now reboot longer than usual.

If all else fails, then you should bring your phone back to the store and have the tech take a look at it.

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