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T-Mobile Galaxy S4 Problems, Errors, Solutions and Troubleshooting [Part 2]

T-Mobile-Galaxy-S4-Problems-2

Hello guys! Welcome to the second part of our T-Mobile Galaxy S4 problems troubleshooting series. Being one of the biggest wireless companies in the U.S., T-Mobile has a superb tech support department and we don’t want to compete that. There’s no way we can even get close to the support the company provides. However, we are committed in helping our readers fix their problems. That’s why we find it necessary to publish support articles like this from time to time.

The problems mentioned in this post were sent by our readers who explicitly included the name of their service provider. The troubleshooting procedures I pointed out here can also be used to other variants of Galaxy S4. So, if you’re an owner of the phone but not a T-Mobile subscriber, continue reading especially if you can find an issue related to yours as you can still use them. If you can’t find what you’re looking for here, then try our Samsung Galaxy S4 Troubleshooting page as we indexed all problems we addressed before.

As usual, feel free to send us emails containing your problems or questions at [email protected] as we are always ready to help. But we urge you to provide all possible details for us to easily and accurately assess your concerns. You may also post on our Facebook wall and/or Google+ page.

The following are the problems addressed in this post. Click a link to jump to a specific issue:

  1. Randomly Reboots
  2. Kies Can’t Detect
  3. WiFi Won’t Turn On
  4. Gallery Keeps Crashing
  5. Thin Colored Line On Top of the Screen
  6. Screen Won’t Turn On After Being Dropped
  7. WiFi Won’t Stay On
  8. Different Way To Factory Reset
  9. Firmware Update Got Interrupted
  10. Won’t Charge At All

T-Mobile Galaxy S4 Randomly Reboots

Problem: Hi team. I hope you guys can help me with my problem. I own a Galaxy S4 that gets its service from T-Mobile network. Last week, there was one instance that the phone rebooted by itself but it didn’t happen again so I thought it was just one of those rare cases that the phone glitches. Today, however, the phone rebooted again but I wasn’t alarmed as it functioned the same after that. A few hours later, it rebooted again and now there are instances the phone freezes before rebooting. Can you help me? Thanks. — Marie

Troubleshooting: Hello Marie. Based on your description, it sounds like the problem is caused by a third-party app. Does it occur while you’re using a certain app? If not, then there’s a possibility there are apps or services crashing the background. To verify that, I want you to boot in safe mode:

  1. Turn the device off completely.
  2. Press and hold the Power button.
  3. Once the Samsung Galaxy S4 logo appears on the screen, release the Power button.
  4. As soon as you release the Power button, press and hold the Volume Down key.
  5. Continue holding the Volume Down key until the phone has completed the reboot process.
  6. If you can read ‘Safe Mode‘ at the bottom left corner of the screen, release the Volume Down key. Otherwise, repeat the process until you can boot the phone to Safe Mode.

While in safe mode, closely observe the phone to see if it still freezes or reboots. If not, then our suspicion that it’s caused by a third-party app is confirmed, otherwise, it’s a firmware issue. With that, a full master reset is necessary to fix it:

  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 to highlight ‘wipe data / factory reset.’
  6. Press Power button to select.
  7. Press the Volume down key until ‘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.

Kies Can’t Detect T-Mobile Galaxy S4

Problem: Hello the Droid Guy. I have a problem with my Galaxy S4 that’s been bothering me for over two weeks now. I backup all my data in my phone to my computer every week. Unfortunately, my computer went crazy last week and won’t boot up. So, I brought it to a local repair shop and the tech told me there was nothing else he could do but reformat the drive and re-install the OS (Windows). All my data remained intact because they were saved in a different drive. The computer’s working fine now, however, I seem to be having a little problem connecting my phone.

Before, when I plug the phone to the USB port, it will immediately be detected and recognized by my computer and Kies. Now, the computer can still detect it but Kies keeps saying the device isn’t ready and that I need to reboot it. I already did that a million times but it’s still the same. Called T-Mobile, my provider, and the tech told me to reset the phone. I’m hesitant to do it but if that’s what it takes to fix this issue, I would do it. What must I do? Please spare a little time taking a look at my problem. Thanks. — Jordana

Troubleshooting: Hello Jordana. It’s probably just a driver issue. Don’t worry, it can easily be fixed. Since you’ve already installed Kies, we will go straight to the point. Please follow these steps:

  1. Disconnect your Galaxy S4 from your computer first.
  2. From the Home screen of your phone, tap the Apps icon.
  3. Find and tap Settings and then tap More in the upper-right corner of the screen.
  4. Scroll to and touch About.
  5. Scroll to and tap Developer options several times until you see the message “Developer mode has been enabled.”
  6. Tap the Back key and then find and tap Developer options.
  7. Tick the checkbox next to USB Debugging to enable it.
  8. Now, connect your Galaxy S4 to your computer again.
  9. The computer will install necessary drivers automatically. After the installation, disconnect the phone from your computer again.
  10. Go back to the Developer options screen and disable (untick) USB Debugging.
  11. Connect the phone to your computer one more time and it should work now.

This procedure will fix the problem for you, Jordana.

T-Mobile Galaxy S4 WiFi Won’t Turn On

Problem: Hey guys, I got a weird problem with my Galaxy S4. For some reason the WiFi button won’t stay on. I noticed this 3 days ago but I didn’t spend time to check on it because I always have mobile data in my account. When I’m at home, that’s the only time I use WiFi but most of the time during the day, the phone connects to the internet through mobile data.

Anyway, I already tried several troubleshooting steps like removing the battery, rebooting the phone and nothing worked. The WiFi button is clickable but when I tap to enable it, it will automatically revert back to Off. Called T-Mobile tech support but they said it’s a phone problem, could be hardware. I don’t know what to believe since it only happened just a few days ago. I’m thinking may be you guys know what the problem with my phone is. If you do, please help me fix this. Thanks. — Louis

Troubleshooting: Hey, Louis. It’s obviously a glitch in the system. As long as the phone didn’t suffer liquid or physical damage, this problem can be fixed by the combination of soft reset and safe mode. Here’s a simple troubleshooting guide for you to follow:

  1. While the phone is on, remove the back cover and pull the battery out.
  2. Now press and hold the Power key for about a minute.
  3. Place the battery back in and the back cover.
  4. Press and hold the Power button.
  5. Once the Samsung Galaxy S4 logo appears on the screen, release the Power button.
  6. As soon as you release the Power button, press and hold the Volume Down key.
  7. Continue holding the Volume Down key until the phone has completed the reboot process.
  8. If you can read ‘Safe Mode‘ at the bottom left corner of the screen, release the Volume Down key. Otherwise, repeat the process until you can boot the phone to Safe Mode.

While in safe mode, enable WiFi to see if it will work. If so, then just reboot the phone normally and the problem is fixed. However, if the WiFi toggle switch still reverts after you turned it on, then it’s the corrupted cache that’s causing this. You need to wipe the cache partition for the WiFi to work again.

  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, let go of 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. After the the cache wipe is complete, press the Power key to select reboot system now.
  8. Press the Power key to select. The phone will automatically restart after the cache is wiped.

Gallery Keeps Crashing on T-Mobile Galaxy S4

Problem: I have a lot of photos in the Gallery of my Galaxy S4 and the phone has been working great until as of late. When I try to open the Gallery app to view the photos, most of the time I get the error message “Unfortunately, Gallery has stopped” but there are also times when the app just works fine. Today, when I try to take some photos using the stock camera, the same message popped up, so now both the camera and gallery have issues.

I might be an intensive user of my phone but I’m not that techie or geeky to be able to fix this problem, which, by the way, I haven’t encountered before so I’m really worried. I might lose all my photos. Please guys help me with this problem. Thanks in advance, Leandro.

Troubleshooting: Hey, Leandro. First of all, check your phone’s storage to see if there is still enough space for running apps, services and newly-snapped photos. If the space available can’t reach 1GB, then the problem might me storage-related. It’s time you backed up your photos to your computer or microSD card if you have one.

However, if there is enough storage left in your phone, then there’s a possibility that the Gallery app is having a hard time managing your photos and probably videos. The more photos the app manages, the slower it loads. When Android system detects an app takes too long to load, it may kill its service, thus force closing the app, then the error message “Unfortunately, Gallery has stopped” will pop up as a confirmation the app was killed while trying to initiate. It won’t hurt if you make backups of your old photos and deleted from your phone’s internal memory.

Lastly, it will also help if you cleared both the cache and data of the Gallery app:

  1. From any Home screen, tap the Menu key.
  2. Tap Settings.
  3. Tap the More tab.
  4. Tap Application manager.
  5. If necessary, swipe left or right to display the All screen.
  6. Tap Gallery.
  7. Tap Clear data and then tap OK.
  8. Tap Clear cache.

Don’t worry, your photos will remain intact.

Thin Colored Line On Top of the Screen

Problem: First all, thank you guys for helping us noob users. I have a Galaxy S4, which was given to me by a friend who upgraded to Note 4. The phone is actually performing good with its battery lasting more than a day with average use. It doesn’t freeze or hang and wireless connections work the way they should. The only problem is that there is a very thin line at the top of the screen (above the status bar) and whatever I do, it just won’t disappear. By the way, I call T-Mobile about it and they, too, don’t have any idea what the line represents.

The funny thing is that it changes colors and becomes shorter by the end of the day. I’m not sure what it does but as far as the performance is concerned, I can’t complain. All I wanted to know is some information about the line and if it’s possible to get rid of it. Your advice will surely be appreciated. Thanks in advance. — Rico

Troubleshooting: Hey, Rico. I don’t think it’s a problem at all. Based on your description, I think that thin line above the status bar that changes colors and grow shorter by the end of the day was placed there by an app called Energy Bar. I personally use this app so I know how it behaves and what its benefits are. You may deactivate it if you don’t want a bar displayed at the top of the screen.

As what the name of the app implies, the thin line above the status bar is supposed to represent the percentage of the battery that is why it becomes shorter by the end of the day when the battery nears zero. The change of colors is also based on how much juice left in the battery so that it would be easier for the user to know if it’s time to plug the phone in to charge or not yet. It’s a pretty slick app and its better than displaying the battery percentage on the status bar. Feel free to uninstall the app if you want to get rid of that thin line.

Screen Won’t Turn On After Being Dropped

Question: Hi Harold. I already read some of your post but I haven’t found problems related to mine. Yesterday, I was in a frantic mode that I thought I properly placed my Galaxy S4 in the pocket of my jeans only to find out the phone lying on the pavement with screen off. The drop was from the waist high but there seems to be no physical damage on the outside, only a couple of scratches on the side. However, the screen won’t turn on anymore but I can still hear the phone playing the notification and ring tones. So, basically, the phone is still powered on but the screen seemed to have been affected by the drop. Is there a trick of some sort that can fix this problem or should I bring it to a technician and have it fixed? — Jaina

Answer: Try removing the battery, Jaina, then start the phone like you always do. If the phone won’t light up or even flicker during boot up, then the drop may have affected the screen to some extent. We can only do so much for hardware issues so I suggest you send the phone in for repair.

T-Mobile Galaxy S4 WiFi Won’t Stay On

Problem: Hi Droid guys. My problem started about a week ago but I initially ignored it because I often use mobile data more than WiFi. In my Galaxy S4, the WiFi toggle switch is always off. When I flick it to turn it on, it will turn on for just a few seconds then automatically turn itself back off, then greyed out. Prior to this problem, I can connect to any WiFi network but now, there’s no way the phone can even detect a WiFi network. We have a pretty stable internet connection at home so WiFi is better than 3G mobile data connection. I would love my phone to connect to WiFi again but T-Mo people don’t know how to fix it. They just told me that maybe factory reset may fix the issue. I don’t want to do that because, first of all, there’s no guarantee the problem will be fixed and, second, all my data will be lost. If you guys know how to fix it, help me…please. Warm regards, Larry.

Troubleshooting: It’s kind of a glitch in the system, Larry. While it’s an annoying problem, there’s nothing to worry about because it’s totally fixable. I’ve encountered a lot of issues like this before and there’s always one procedure that can fix it almost immediately. Of course, the first thing you have to do is reboot the phone to see if that makes a difference, if not, then proceed to the following procedure:

  1. Turn the device off completely.
  2. Press and hold the Power button.
  3. Once the Samsung Galaxy S4 logo appears on the screen, release the Power button.
  4. As soon as you release the Power button, press and hold the Volume Down key.
  5. Continue holding the Volume Down key until the phone has completed the reboot process.
  6. If you can read ‘Safe Mode‘ at the bottom left corner of the screen, release the Volume Down key. Otherwise, repeat the process until you can boot the phone to Safe Mode.

In safe mode, turn the WiFi on and see if it stayed that way. If so, reboot the phone normally and once it has completely booted up in normal mode, the WiFi is already turned on. Turn it off, then turn it back on. That should do it. However, in case the WiFi still won’t stay on in safe mode, wiping the cache partition will fix the problem as the phone will be forced to create new sets of cache for WiFi.

  1. Turn off the device.
  2. Press and hold the following three buttons at the same time: Volume Up key, Home key, Power key
  3. When the phone vibrates, let go of 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. The phone will automatically restart after the cache is wiped.

Different Way To Factory Reset T-Mobile Galaxy S4

Problem: Hi guys. I got a really serious problem with my Galaxy S4 (T-Mobile). There was an update that could have messed up the settings in my phone as I am now getting the error “Unfortunately, Settings has stopped” and I can’t do a thing with my phone because the moment I unlock it, the error pops up immediately. I tried booting in safe mode but the problem also appears there. Finally, I decided to factory reset the phone but every time I go to the Settings, the error will pop up and freezes my phone to the point that I have to pull the battery out and restart it. Is there a way to reset the phone without going into Settings? I hope you can respond soon. — Catherine

Troubleshooting: Hi Catherine. Since you already decided to reset your phone, I won’t hold you up any longer. Just follow the steps below to perform full master reset. But be warned that all your data saved in the phone’s internal storage will be deleted during the process.

  1. Turn the phone off completely.
  2. Press and hold the Volume Up, Home and Power buttons.
  3. Release the Power button when the phone vibrates but continue holding on to the Volume Up and Home buttons.
  4. When the Android System Recovery screen appears, release both the Home and Volume Up buttons.
  5. Using the Volume Down key, highlight ‘wipe data / factory reset.’
  6. Press the Power button to select it.
  7. Using the Volume Down button again, highlight ‘delete all user data.’
  8. Press the Power key to select it.
  9. Once the reset is complete, choose ‘Reboot system now.’
  10. Press the Power button to restart the phone.

Firmware Update Got Interrupted on T-Mobile Galaxy S4

Problem: I got the notification that an update is available for my phone, an S4, but when I tried downloading the update, it would say update was interrupted. I attempted many times already to no avail. Called T-Mobile and I was advised there is another was to update my phone through a computer. The rep told me the steps but I haven’t absorbed it. So, can you guys walk me through downloading and installing the latest update through my computer? Thanks in advance. — Monica

Troubleshooting: Hi Monica! Yes, you can update your phone through computer using Samsung’s application known as Kies. I outlined a simple guide for you below to follow:

  1. Backup all your data or those you don’t want to lose.
  2. Make sure you installed the latest KIES on your computer. [download link]
  3. Connect your phone to your computer using it’s original USB cord.
  4. Run KIES.
  5. Go to Tools and choose Firmware Upgrade and Initialization.
  6. Enter the name of your phone.
  7. Input the model name of your Galaxy S4 (in CAPS). It is found at the back of its casing.
  8. Select OK.
  9. Kies will now verify if your device is supported along with a warning message saying that all data from your device will be deleted during the process.
  10. Click OK if you agree with it.
  11. Kies will download and initialize the firmware update. Wait until it finishes.
  12. Just hit Continue with every warning message until you reach the emergency recovery process.
  13. Don’t forget to put a check on the confirmation message saying, “I have read all of the above information” once you have performed all the required information in the window.
  14. Configure your desired information saving option, connect to Kies and switch your phone to Recovery Mode.
  15. Hit the Start Upgrade button and wait until the process finishes. Do not interrupt the process.
  16. After you see a confirmation message saying that everything is complete, hit the OK button to finish.

T-Mobile Galaxy S4 Won’t Charge At All

Problem: My Galaxy S4 started to act up about 4 days ago, it didn’t want to accept a charge. Of course, I was using the original charger but the phone wouldn’t respond if plugged in. I bought a new charger, still nothing. So, I thought may be it was the battery. I bought a new one (original), still nothing. I don’t want to spend more money on things that can’t fix the problem. So, guys, if you know what the problem with my phone is, please help me how to fix this problem. Thank you. — Lindy

Suggestion: Hi Lindy. I’m afraid you will have to spend several bucks to have the phone checked by a technician. As you said the problem remained even with new charger and battery, so the issue must be in the phone’s hardware. There’s nothing we can do when it comes to these things, so you need help from a technician.

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