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Galaxy S5 won’t connect to the internet, wifi won’t work properly if mobile data is ON, other issues

Welcome to another #GalaxyS5 post! We know for a fact that the S5 is one of Samsung’s most popular flagships but it’s definitely not perfect. In this post, we bring you 6 more cases that demonstrates where the S5 can fail. Hopefully, the solutions we provide here can help not just the users mentioned but also others who may be experiencing similar problems.

Below are the cases we cover in this post:

  1. Galaxy S5 screen showing black lines when auto brightness is enabled
  2. Galaxy S5 running Android Marshmallow has battery drain issue
  3. Galaxy S5 won’t turn on | Galaxy S5 black screen issue
  4. Galaxy S5 won’t connect to the internet
  5. Galaxy S5 wifi won’t work properly if mobile data is ON | Netflix app won’t stream videos on Galaxy S5 wifi
  6. Galaxy S5 mini bluetooth won’t work with head unit of Honda Ballade

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, or you can install our free app from Google Play Store.

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 S5 screen showing black lines when auto brightness is enabled

Greetings! I am glad I found your website and I’m hoping you can answer this question for me and possibly provide a simple solution for me. I purchased this Samsung Galaxy S5 from a secondhand electronics retailer. This retailer is actually quite reputable, having earned an A+ rating from the Better Business Bureau. I was aware of this issue when I purchased the device.

The issue is that black lines appear on about 2/3 of the bottom of the screen when it is placed into and taken out of sleep mode. This seems to be hit and miss, and it happens more so when the auto brightness mode is activated. I mentioned something about this to the cell phone store I plan to activate this device at, and one of the employees stated that it’s a logic board issue. I am really hoping that is not the case as I have looked up the procedure for replacing one, and the process looks rather difficult and potentially costly as I would have to purchase tools specifically for this type of replacement. Perhaps it’s a dirty contact? Maybe a bad wire connector? Maybe it’s a software issue? I’m hoping you can give me some insight on this. I would be even happier to hear this won’t affect the performance or longevity of my device, but I realize those could possibly be unrealistic expectations. I thank you for taking the time to read this, and I hope I gave you enough details about this issue that you are able to address it correctly. I hope to hear from you soon. Best regards. — Jacob

Solution: Hi Jacob. We can’t diagnose an issue like this given the short problem description provided here. A thorough software and hardware check must be done to understand where the problem even begins. A full history of the device is also necessary to help us get a full picture so we’re sorry that we won’t be able to give a definitive answer to your question. Like all Android issues, you must consider both software and hardware causes. The general troubleshooting approach is to start with the basic software steps. If they won’t fix your issue, the problem is most probably due to faulty hardware.

Boot to safe mode and observe

That said, the first thing that you want to do here is to see if it’s app-related. Try booting the phone to safe mode, then replicate the issue again. Safe mode blocks third party apps and services so if one of the installed apps is causing the problem, you won’t experience it while safe mode is enabled. Here’s how to boot the phone to safe mode:

  1. Turn the device off.
  2. Press and hold the Power key.
  3. When ‘Samsung Galaxy S5′ 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.

Wipe the cache partition

Another must-do that you should perform in this case is deleting the cache partition. Doing so will delete old temporary files from the cache partition as well as force the phone to build a new system cache. Sometimes, apps may not work properly if the system cache is corrupted or outdated. To wipe the cache partition, follow these steps:

  1. Turn off the device.
  2. Press and hold the following three buttons at the same time: Volume Up key, Home key, and Power key.
  3. When the phone vibrates, release the Power key but continue to press and hold the Volume Up key and the Home key.
  4. When the Android System Recovery screen appears, release the Volume Up and Home keys.
  5. Press the Volume Down key to highlight ‘wipe cache partition.’
  6. Press the Power key to select.
  7. When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  8. Press the Power key to restart the device.

Check some hardware functionalities under the service menu

Another good troubleshooting step that you can safely do is by accessing the service menu to do some tests. Here’s how:

  1. Open your Phone app.
  2. Dial “*#0*#” (without the quotes).
  3. Do tests for the following: Red, Green, Blue, Dimming, Touch, and Black boxes. If you’ll notice the problem when doing one of the tests, that’s an indication of faulty screen. If nothing happens though, proceed to the next step.

Turn off auto brightness and observe

Auto brightness feature is managed by the operating system and it’s possible that this particular feature may not be working properly due to an unknown bug. Try turning it off and observe how the screen works. If the screen works normally, that’s an indication that a software bug may be to blame.

Perform a factory reset. To fix a possible software glitch or issue, you can try to factory reset the device. This will force the phone to revert all software settings back to their known, working state. If the bug was introduced after you installed some updates for the operating system, factory reset should take care of it. The following are the steps on how to factory reset your S5:

  1. Turn off the device.
  2. Press and hold the following three buttons at the same time: Volume Up key, Home key, and Power key.
  3. When the phone vibrates, release the Power key but continue to press and hold the Volume Up key and the Home key.
  4. When the Android System Recovery screen appears, release the Volume Up and Home keys.
  5. Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

Problem #2: Galaxy S5 running Android Marshmallow has battery drain issue

Hello! I bought a refurbished S5 a few days ago from a trustable shop. I asked him to upgrade the phone to 6.0.1, which he did using Odin and AT&T files (not in the US ATM). I tried the phone overnight and noticed the battery running out fast.

Other thing was that when charging it turned off, phone showed 100%, but when I opened it, 93%. Every time. Went back at the shop to get a new battery and went away. Same problem. Since then I tried recalibrating the battery (with app and by emptying the power and charging to 100% and uncharging again), updating all the apps, “holding power button while no battery” trick, using the phone without any SD, clearing cache and factory reset. Nothing works. Weird thing though: went doing factory reset, on the first powering on, the phone gets stuck on AT&T screen. I take out the battery, turn it on again and now it does the usual first config. I tried the factory reset many times and I gotta do that every time or else it gets stuck on AT&T logo. I have no idea what to do… could it be a faulty version of 6.0.1? The fact that it jams every time is bugging me. Any ideas? Thanks a lot!        — Simonpoulin10

Solution: Hi Simonpoulin10. That you have a refurbished phone in the first place can be the primary reason for the problem. Refurbished phones are usually so for a reason and they don’t become refurbished in the first place if the previous owner did not find an issue with it. We don’t know the full history of your device, whether or not the problem you’re experiencing right now happened before, so there’s no way we can get to the bottom of the issue.

Of course there’s also the possibility that the installed firmware may be the cause. Keep in mind that although Android Marshmallow can work on the S5, this device was designed to work originally with Android KitKat and Lollipop. It’s hardware may not be fully compatible with Android Marshmallow at this time, which is one of the main reasons why S5 owners who installed Marshmallow on their device regularly encounter problems.

If possible, we recommend that you try flashing KitKat or Lollipop on the device and observe how it works.

Problem #3: Galaxy S5 won’t turn on | Galaxy S5 black screen issue

This morning my phone (Samsung Galaxy S5) was working normally. I listened to music on the way to work as usual and plugged it into the charger as power was low. Later I unplugged the charger, it was nearly ‘full’ and checked my messages. As I was reading them the ‘headphones connected’ symbol kept appearing despite them not being connected and shortly after the phone started randomly opening/closing apps, then shutting down and booting up again. Finally, the screen went black and the phone would not switch on again. Despite this, it started vibrating continually and hasn’t stopped for the last five hours. Connecting the charger makes no difference and the battery cannot be removed. The phone has not been dropped or got wet or been exposed to heat etc. The noise is so annoying and I just can’t get the phone to come on. Please help! Thanks. — Jillian

Solution: Hi Jillian. If you can’t make the phone stable again by doing a soft reset or battery pull, we recommend that you try to boot it to recovery mode so you can wipe it’s cache and, if necessary, restore software settings to their default state via factory reset. Here’s how to boot to recovery mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and then hold the Home and Volume UP keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 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. You can either wipe the cache partition or do a factory reset when in this mode.

You can also try the other modes (safe mode and download mode) if nothing comes out positive with recovery mode, or if your phone remains totally unresponsive at all.

Boot in Download Mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and then hold the Home and Volume DOWN keys, then press and hold the Power key.
  3. When the Samsung Galaxy S7 shows on the screen, release the Power key but continue holding the Home and Volume DOWN keys.
  4. Wait until the Download screen appears.
  5. If you can boot the phone in download mode but not in other modes, that means that your only way out may be to flash a stock or custom firmware.
  6. Use Google to look for a guide on how to do it.

Boot in safe mode:

  1. Charge the phone for at least 30 minutes.
  2. Press and hold the Power button.
  3. Once the ‘Samsung Galaxy S7’ 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.
  6. The only difference of safe mode from normal mode is that the former prevents third party apps from running. If you can boot the phone in safe mode but not in normal mode, uninstall all apps until the issue (that prevents you from booting normally) is eliminated.

Consult a technician. If the problem continues or the phone stays powered off even after you attempt to boot it to any mode, bad hardware must be to blame. You must have the phone repaired or replaced.

Problem #4: Galaxy S5 won’t connect to the internet

Hi. I have had a Galaxy Grand Prime for almost 2 years that I had no complaints with except memory. I had to turn it in under warranty due to randomly cutting off & not coming back on without removing battery. I just got an S5. So far it’s ok except where the Grand Prime would work anywhere as far as my apps go…Facebook, Radar, Nextraq for work, etc… this phone says it won’t connect due to no internet connection. I have contacted Soluto which came with the phone for 30 days, no help. I don’t understand why this phone is supposed to be a better phone and I am having this issue. Will you help me please? — Melissa

Solution: Hi Melissa. There are two ways to connect to the internet in an S5, one is via your carrier’s mobile data network, and the other is via wifi. If you’re having trouble connecting to the internet via both methods, your S5’s hardware may be defective. In that case, you must return it to the store or your carrier for repair or replacement.

Unable to connect to the internet via cellular or mobile data

In case you’re only having the problem with mobile data, below are the troubleshooting steps that you must take.

Verify that ordinary indicators of service are working. Sometimes, network issues can easily be fixed by doing the basics first.  Make sure that the following are in place before advancing to  more advanced troubleshooting steps.

  • Is the phone showing cellular signal bars in the status? The more signal bars there are, the better. 2 signal bars often indicates you are in a poorly covered area. If your phone does not show any signal bars at all, you can’t expect to have cellular connection.
  • What type of cellular connection is the phone getting? Is it 2G, 3G, 4G, etc? keep in mind that they type of connection type can affect your phone’s internet connection speed. If you’re not getting 3G or 4G, that’s probably one of the reason why your apps are unable to connect to the internet.
  • Is mobile data turned on?

Check if you set mobile data limit on your device. The Galaxy S5 has a built-in feature that allows a user to manually set a limit on mobile data usage. If you set it up before but forget to turn it back on, this may be the reason why your phone no longer allows you to connect to the internet. To check,

  • Go to “Settings -> Mobile Data/Data Usage” (depending on your device).
  • You’ll see a graph showing your data usage, along with a whole bunch of settings. Make sure your data limits in the graph correspond with what your network allows by dragging the limit up or down in the graph.
  • Alternatively, you can turn off all data limits by unticking the “Limit mobile data usage” box.

Verify that APN settings are correct. Most GSM phones automatically sets the access point names once a working SIM card is inserted. APN is a set of network information that must be configured in a device to allow it to operate in a carrier’s network and use its internet service. To check if your phone has the correct APN settings, do the following:

  • Go to “Settings -> Mobile Data/Wireless Controls/Wireless & Networks.”
  • Tap “Mobile Networks -> Access point names.”
  • You should see a list of APNs (potentially with only one network on them). Tap the menu icon at the top-right, then “Reset to default.”

If you are not sure what details to put in the boxes, contact your wireless carrier, ask for the right ones, and manually enter the APN settings yourself.

If nothing works after you entered the right APN settings, you must tell your carrier so they can help you further. There may be an on-going issue on their network that affects your area. Sometimes, the issue is not necessarily on the user’s end so they should help you narrow down the causes and provide the solution.

Unable to connect to the internet via wifi

In case you’re only having the problem with wifi connection, below are the troubleshooting steps that you must take.

Check if your phone’s wifi is turned ON. Like mobile data, the wifi switch on your phone must be enabled so your device can have internet connection. This may look stupid but a lot of users fail to check this first before they complain.

Is Airplane mode on? This feature must NOT be on, unless you are, as the name says, in an airplane.

Are you getting authentication error? If yes, then most probably the wifi network you’re on is secured and requires that you re-enter the correct password first. Authentication errors are mostly indicators that the network cannot allow your device to use the internet because it is not trusted. Most of the time, this error can be fixed by simply entering the right password. In other advanced wifi networks, you may have to go to special log-in page first so you can enter the correct username and random password.

Is your phone getting strong wifi signals? Like in mobile data connection too few wifi signal bars or none at all result to  bad or slow connection.

Make sure that the wifi network you’re connected to is working. To do that, try to check if there are other devices that are connected to the same wifi network. If internet works on these devices, that’s a confirmation that the wifi network is working.

Disconnect/reconnect from your wifi network. If you haven’t yet, the next good thing to do is to ensure that you disconnect from and reconnect to your wifi network. This will also make sure that you enter the right password for the network. If you are not the administrator of the wifi network, make sure that you ask for the correct password from the right person.

Are you connected to a wifi network but can’t browse the web? Some wifi administrators may allow devices to connect to the local network but won’t provide enough bandwidth to let them connect to the internet. Again, you must talk to the wifi admin if you have this problem.

You must also talk to your wifi admin if you’re getting an “obtaining IP address … error.”

Do a factory reset. If you’re 100% positive that your wifi network is working and there are not filters blocking your phone from connecting to the internet, the next best thing to do is to check if there’s a software glitch that affects wifi functionality of your phone. Make sure that you create a back up of your files before you do this step. Here’s how to factory reset your S5:

  • Turn off the device.
  • Press and hold the following three buttons at the same time: Volume Up key, Home key, and Power key.
  • When the phone vibrates, release the Power key but continue to press and hold the Volume Up key and the Home key.
  • When the Android System Recovery screen appears, release the Volume Up and Home keys.
  • Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  • Press Power button to select.
  • Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  • Press Power button to select and start the master reset.
  • When the master reset is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

Problem #5: Galaxy S5 wifi won’t work properly if mobile data is ON | Netflix app won’t stream videos on Galaxy S5 wifi

I’ve had this issue for a while and just dealt with it but it’s really annoying. For some reason my WiFi and LTE seem to clash a lot with certain apps. Basically if I don’t manually go in and disable LTE, my WiFi won’t work properly. This mostly seems to affect apps that also use GPS. Eg. Google maps, apartment searching apps, and weather apps. If I disable mobile data the wifi works fine but if both are on those apps often won’t work at all. Most games and browsers work fine though.

Also on a possibly related note my phone also won’t load Netflix over wifi, but loads it fine on LTE. — Gabriel

Solution: Hi Gabriel. Ideally, a user is supposed to allow one type of internet connection only one at a time. This is so to avoid apps from switching between available network types. Samsung has added a feature called smart network switch to manage internet connection smoothly when both wifi and mobile data are enabled. Sometimes, smart network switch doesn’t work as advertised though so you must try to turn it off to fix the issue. Here’s how:

  • Open the Settings app.
  • Tap Wifi.
  • Tap More.
  • Tap Smart network switch.
  • Disable smart network switch.

For your Netflix issue, make sure that you let the app know that you allow it to stream via wifi too. To do that, simply head over to the app’s settings menu>Cellular Data Usage and select Off (watch on wifi only).

Problem #6: Galaxy S5 mini bluetooth won’t work with head unit of Honda Ballade

Samsung S5 mini – SM-G800F (Android 5.1.1), Honda Ballade 2016 (Called a City in some countries) pairs successfully, loads contact list in head unit, receives calls, dials manually from head unit or from steering column controls. Will not record voice tags and voice dial. Cleared cache, removed battery and reset. Deleted phone from head unit. Occasionally allows first tag to be recorded but will not dial on voice. Other Samsung phones apparently operate normally. (Primarily Samsung Note 2 GT-N7100, Android 4.4.1). The phone previously operated flawlessly with Subaru Impreza 2011. Honda South Africa are unable or unwilling to assist and will not supply a list of supported phones for this vehicle. Any assistance would be welcome. — Robin

Solution: Hi Robin. Most of the time, an issue like this is caused by an outdated bluetooth system in the head unit. If you still have it, consult the head unit’s manual and see how you can update its firmware. If that won’t fix the issue, consider doing a factory reset on your Galaxy S5. These are only two things that you can do to try to fix the issue. If an S5 factory reset won’t work either, the most likely cause is the head unit. We always see this type of problem when new updates are installed to smartphones, and this is not even isolated to Android phones. iOS devices are also known to encounter problems with other head units simply because the latter’s software has become incompatible with the phones. Car kit systems don’t usually receive updates as often as smartphones do and many of them run on older hardware. If you can’t make your head unit work with your smartphone, you either have to simply accept the fact, or consider replacing it with a newer compatible version.

 


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