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S9 won’t connect to wifi

How to easily remove pop ups from your Galaxy S9

Today’s troubleshooting article addresses some #GalaxyS9 issues, particularly in removing ad pop ups. This issue is one of the common situations that a lot of Android users experience. We hope this article will help in fixing your own version of this issue. This post also answers other related issues for the S9 so be sure to browse through all the cases.

Before we proceed, we want to remind you that if you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page. When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Problem #1: What to do if Galaxy S9 Plus won’t stay connected to hidden wifi network

Have a brand new Galaxy S9+ from AT&T. In a nutshell, the phone will not reconnect or stay connected to a WiFi network where the SSID is not being broadcast. I went through all of your suggestions for the phone including a factory reset. And I know it is not the router because (1) it is up to date and (2) there are a dozen other devices connected to it that work fine. I can manually add the network and the phone will connect just fine to the hidden network. After a period of time it will drop the connection (frequency shift with the router?) and then show that network as out of range. If you add the network again, it will connect just fine (so not a range issue). Same happens when you leave the house, the connection is dropped and will not re-establish itself when you return unless you manually add the hidden network back it again. Change the router to broadcast the SSID and the phone immediately links to the “out of range” WiFi and stays connected.

Solution: As far as wifi connectivity is concerned, Samsung Galaxy devices do not have options to troubleshoot this type of issue. Yes, it’s possible that this may be a phone bug but the situation can also be due to a router limitation. We can confirm though our own Galaxy S9 Plus (international version) does connect to a hidden wifi network without dropping it after some time. To identify where the problem lies, we suggest that you try connect to another hidden wifi network. This is more practical way of narrowing down the factors than replacing the phone first. If your S9 Plus continues to drop the connection to a hidden network (from a second wifi), you can assume the problem is phone-related. If possible, you want to talk to Samsung and see if there’s a way for them to replace the device for you. Keep in mind that if your wish is granted, you may get a refurbished or reconditioned S9 Plus instead of a brand new one.

Problem #2: How to easily remove pop ups from your Galaxy S9

Constant pop ups on galaxy S9 Sprint phone. me and my wife both have S9 phone, The problem: my wife phone constantly having pop ups one every 30 seconds. My phone hardly ever. I have already done a factory reset 1 month ago.  It stop the ads for a short time, but then they came back again. She use very few apps. Does this have to be application problem or could be the phone itself or is Sprint the carrier responsible for these annoying pop ups. She wants a new phone, not sure that will prevent the problem.  What is the best protection out there to prevent this from happening?

Solution: The quantity of apps does not determine the situation on your wife’s phone. Instead, just like in some aspects of life, quality is really the key. Even if her phone has only an app installed but it’s of poor quality or malicious, pop ups can still show.

Usually ad pop ups in Android devices are results of installing malicious apps or apps designed mainly to monetize through persistent pop ups. If you really want to fix the issue for good, make sure that you screen thoroughly what apps you install. Keep in mind that apps are expensive to make and maintain. Only a very small fraction of app developers do not want to monetize their products. If an app developer can’t produce the monetary return developers are expecting, they may resort to using unapproved or unethical means, like allowing their app to overly display ads, or to install backdoors to allow other apps to be installed even without a user’s knowledge. Apps of this type may also steal personal information and other data to sell to third parties.

Observe in Safe Mode

If you want to check if you have an app issue, you can try to boot your wife’s S9 to safe mode. In this mode, no third party apps will be allowed to run. So, if the ads or pop ups are absent in safe mode but return in normal mode, you can bet the reason for them is due to an app or apps. If you haven’t tried restarting to safe mode before, here’s how to do it:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen.
  3. When “SAMSUNG” appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. Safe mode will display in the bottom left corner of the screen.
  7. Release the Volume down key when you see Safe Mode.
  8. Observe the phone for a few hours and see if pop ups continue.

To identify which of your apps is causing the trouble, you should boot the phone back to safe mode and follow these steps:

  1. Boot to safe mode.
  2. Check for the problem.
  3. Once you’ve confirmed that a third party app is to blame, you can start uninstalling apps individually. We suggest that you begin with the most recent ones you added.
  4. After you uninstall an app, restart the phone to normal mode and check for the problem.
  5. If your S9 is still problematic, repeat steps 1-4.

Wipe the phone

An easy way to remove pop ups is to return all software information of a device to their defaults or by doing a factory reset. When it comes to pop ups though, factory reset is just a “band-aid” solution. You’ll most likely encounter the same issue, just like what happened to your wife, if you’ll not be very selective with apps you install. Be sure to educate your wife by telling her to install apps from reputable sources only. Try to stick to official apps and avoid those from unknown or suspect developers. It may also help if you check user reviews before adding an app. Some users may report suspicious activity after installing an app so you can use their reviews to stay away from that app.

For reference, here are steps on how to factory reset an S9:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  5. Press Power button to select.
  6. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  7. Press Power button to select and start the master reset.
  8. When the master reset is complete, ‘Reboot system now’ is highlighted.
  9. Press the Power key to restart the device.

Problem #3: Galaxy S9 won’t connect to wifi, keeps getting “Authentication Error Occurred”

I work in an area that does not have cell phone reception so mostly wifi reliant here, but my samsung S9 will not connect to the wifi often saying “Authentication Error Occurred.” and since I can’t use the cell service i had to factory reset my phone and in order to get back into my phone i need the wifi, hopefully you can help me out here.

Solution: “Authentication Error Occurred” is an indication that your S9 is unable to connect to a wifi because it’s not allowed by the wifi network, most probably due to incorrect passkey.  Be sure to enter the correct passkey (or wifi password). If you are 100% positive that you are keying the correct passkey, then you can try other means of fixing the issue.

Forget wifi network

This should be the next best thing to do. This simple troubleshooting step often fix “Authentication Error Occurred” scenarios. To do it on your S9:

  1. Open Settings app.
  2. Tap Connections.
  3. Tap the wifi network.
  4. Tap and hold the wifi network you want to forget.
  5. Select Forget network.

Reset network settings

Should forgetting of a particular network won’t help, you can then try to reset the device’s network settings. This will erase not just wifi networks and their passwords but also other stuff like Bluetooth pairings and settings, VPN settings, and cellular connection settings.

To reset network settings of an S9:

  1. Open Settings app.
  2. Tap General management.
  3. Tap Reset.
  4. Tap Reset Network settings.
  5. Tap RESET SETTINGS button to confirm.
  6. Restart your S9 and check for the problem.

Problem #4: What to do if Galaxy S9 has poor or weak cellular signal

I have a Galaxy S9. I’m having reception problems out of it I’ve not change my service provider but now I have 1 bar too. no Bar in the same area. they used to have 3 to 4 Barr of service sometimes. I have to type my text then put the phone away from me about 3-foot before I get reception to send a text. it also helps if I have it plugged into my charger to get reception and when I talk on it, it dropped calls halfway through the call. but if I use my earphones and set the phone away from me will not drop call then I do live in a mobile home and it’s hard to get reception in the house but I got the same phone and I used to get reception where I don’t anymore. I don’t have this trouble when I leave the house in town is there something I can put on my phone to get better reception at home please contact me back with any answer you may have by email or call if you like 870-847-0025. 

Solution: We suggest that you talk to your network operator about this problem first. Based on your description, the problem appears to be inconsistent signal quality in your location. Such a problem is mostly due to poor service, and not exactly a device-related problem. It’s wise if you let your carrier’s technical support team help you identify where the problem is coming from.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.

Galaxy S9 automatically switches to mobile data when wifi is off, won’t connect to one wifi network

One of the least known features of Samsung Galaxy devices is called Smart network switching. We think that this is the reason why one of our readers is having an “issue” right now. Smart network switch is basically a feature that allows a #GalaxyS9 to use mobile data when wifi has been disconnected or out of range. If you’re one of those who thinks this behavior on your S9 should not be happening, we suggest that you take a look at our suggestions below.

Before we proceed, we want to remind you that if you are looking for solutions to your own #Android issue, you can contact us by using the link provided at the bottom of this page. When describing your issue, please be as detailed as possible so we can easily pinpoint a relevant solution. If you can, kindly include the exact error messages you are getting to give us an idea where to start. If you have already tried some troubleshooting steps before emailing us, make sure to mention them so we can skip them in our answers.

Problem #1: Galaxy S9 automatically switches to mobile data when wifi is off or out of range

I have the lovely new Samsung S9 (not plus) on O2 network. I have been experiencing a problem when it’s going from being connected to Wifi and then picking up mobile data.  I have had the phone for 3 weeks now and i am on my second handset – which is doing exactly the same. I had on the old phone a network settings refresh, new sim card and then a new handset.  New handset – old sim card that was replaced 2 weeks ago. If i put it in airplane mode ad back on again – it’s fine – but i have to do this everytime i step away from wifi. Any thoughts? I think it’s a software problem but have the latest software update installed. I can’t believe that in the entire world i am the only person to have this problem on two handsets? Any thoughts you have on this would be very much appreciated.  Else i will be going back to O2 to see what they say. Thanks. — Louise Umbers

Solution: Hi Louise. The problem most probably stems from a software bug that’s isolated to your carrier’s firmware build. Frankly, we haven’t encountered this issue on the S8 or S9 before. We also did not receive any reports from other members regarding this issue so we can’t say that it’s a pervasive one. If you do a quick Google search about this issue, there’s no mention of exact or similar situation at all so this may be isolated to your carrier. That the issue continues to occur even on the replacement handset is an obvious sign that the issue may only be happening for users on O2 network.

Smart network switching

Samsung Galaxy devices have a feature called Smart network switching to allow them to automatically use mobile data when wifi is disconnected or out of range. If you enabled this feature, this may be the reason why your S9 behaves the way it is right now. Basically, Smart network switch was created to save a user from the hassle of manually turning on mobile data when wifi is not available. If you don’t want this to happen, then simply turn smart network switch off. Here’s how:

  1. Open Settings app.
  2. Tap Connections.
  3. Press and hold Wi-Fi.
  4. Tap ADVANCED.
  5. Check what’s the status of Smart network switch. It should not be on if mobile data is off. If you want to turn on Smart network switch, make sure to turn on mobile data first. Otherwise, just leave Smart network switch in its current position.

Possibly not an Android issue

If the cause of your concern is not the smart network switching feature, then it’s most probably a bug. Bugs are almost always not easy to troubleshoot so a lot of trial-and-error processes have to be done to identify where they’re coming from. We don’t work for your carrier though so we don’t have the data to conclude if this bug is as pervasive as it looks to you. The most that we can do right now is to monitor the issue and see if it’s also happening with other devices from other networks. If that happens, we might have an operating system bug.

Contact your carrier

In the meantime, we want you to continue doing the workaround of toggling Airplane mode on and off. We also suggest that you let your carrier know about the problem so they can continue to find solutions for you. You can tell them that there’s no one else experiencing this problem so its most likely a carrier firmware bug and not a general Android issue.

Problem #2: Galaxy S9 won’t connect to one wifi only

Good morning from Greece! I have a problem with my Samsung S9. It can’t connect to my home WIFI. It used to connect, it connects in every other wifi, all other devices connect with no problem to my home WIFI, but not my smartphone anymore. It connects for some seconds and then disconnects and stays “saved and secured”. if I connect it again, it will stay on for some seconds and then again the same. It does that only on my home Wifi. I would appreciate any kind of help, as this thing is driving me nuts. Thank you very much!  — Kostis Gogios

Solution: Hi Kostis. There’s a number of possible reasons why this issue is happening so let’s discuss each of the possible solutions that you can try.

Refresh the cache partition

One of the common reasons for minor annoyances and bugs in Android is a corrupted system cache. This type of cache is used by Android to load apps quickly but sometimes, it can become corrupted. To ensure that the system cache is in top shape, make sure to clear the cache partition where it’s stored. Here’s how:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Android logo displays, release all three keys.
  4. An ‘Installing system update’ message will show for 30 – 60 seconds before the Android system recovery menu options appear.
  5. Press the Volume down key several times to highlight wipe cache partition.
  6. Press Power key to select.
  7. Press the Volume down key to highlight yes, them and press the Power key to select.
  8. When the wipe cache partition is complete, Reboot system now is highlighted.
  9. Press the Power key to restart the device.

Forget network

One of the simplest ways to fix a wifi issue is by disconnecting it first, then connecting it back again. We call this process in Android forgetting the network. If you haven’t tried that yet, follow these steps below:

  1. Open Settings app.
  2. Tap Connections.
  3. Tap Wi-Fi.
  4. Press and hold the name of your home wifi.
  5. Tap Forget network from the box that comes up.
  6. After a few moments, reconnect to your wifi and see if everything is working normally.

Reset network settings

Sometimes, a full network reset is necessary to fix wifi problems. If the issue still remains this far, make sure to reset your S9’s network settings by doing the steps below:

    1. Open Settings app.
    2. Tap General management.
    3. Tap Reset.
    4. Tap Reset network settings.
    5. Tap RESET SETTINGS button.
    6. Restart your S9 and check for the problem.

 

 

Safe mode

Rogue apps can sometimes lead to problems, including those that affect wifi network functions. To check if one of your third party apps may be to blame, make sure to boot your device to safe mode. In this mode, all third party apps will be blocked so if wifi works normally, that’s a confirmation that you have an app issue.

To boot your phone to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen appearing on the screen.
  3. When SAMSUNG appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. When Safe mode appears in the bottom left corner of the screen, release the Volume down key.
  7. Check for the problem.

Remember, safe mode is a tool that should help you know if one of your added apps is problematic. If you think that that’s the case, then you should do trial-and-error to find what that app is. Basically, all you need to do is to uninstall apps individually and check for the problem.  Below are the specific steps that you can try:

  1. Boot your S9 to safe mode.
  2. Observe the phone and see if wifi works normally or not.
  3. If wifi works properly, then you want to go ahead and uninstall an app.
  4. Restart the phone to normal mode.
  5. Check for the problem.
  6. If the issue returns, repeat steps 1-5.

Continue doing the same cycle until you’ve identified the problematic app.

Reset settings

One other option that you can try in this situation is to reset all settings back to their defaults without actually wiping the phone, like in factory reset. Hopefully, by resetting all software settings of your device, you’ll also be wiping out an unknown bug causing your wifi problem.

To reset the settings of your S9:

  1. Open Settings app.
  2. Tap General management.
  3. Tap Reset.
  4. Tap Reset settings.
  5. Tap RESET SETTINGS button.
  6. Restart your S9 and check for the problem.

Factory reset

Finally, if the issue is still there after doing all the suggestions above, make sure that you wipe the phone clean by returning all its settings back to their defaults. Factory reset will delete your personal data as well so be sure to back them up before attempting this solution option.

To factory reset your S9:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  4. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  5. Press Power button to select.
  6. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  7. Press Power button to select and start the master reset.
  8. When the master reset is complete, ‘Reboot system now’ is highlighted.
  9. Press the Power key to restart the device.

 


Engage with us

If you are one of the users who encounters a problem with your device, let us know. We offer solutions for Android-related problems for free so if you have an issue with your Android device, simply fill in the short questionnaire in this link and we will try to publish our answers in the next posts. We cannot guarantee a quick response so if your issue is time sensitive, please find another way to resolve your problem.

If you find this post helpful, please help us by spreading the word to your friends. TheDroidGuy has social network presence as well so you may want to interact with our community in our Facebook and Google+ pages.