How to fix Samsung Galaxy S9 Plus No Service issue

Hello Android fans! Welcome to today’s troubleshooting episode for the #GalaxyS9. We’ve been getting a lot of questions about this device for the past few days so below is our answer to some of them.

Problem #1: How to fix Samsung Galaxy S9 Plus No Service issue

I travel a lot internationally but mainly use ISP for communication when offshore. Last trip home i topped up pre paid data and phone again but could not make a call. I see it dialling though no noise and then it disconnects. I also found I cannot receive calls. I took to provider Telecom who were useless as was the call centre. leaving the store I tried to manually select the Telecom provider and yay I could make 3 calls then it stopped again. No longer could I make ir receive calls. But if I can add Internet connection and ISP calls via whatsapp, wechat are fine as is web surfing. sms messages I can send and receive but just no voice calls. I changed my sim card to another phone and no problems I could make and receive voice calls. Then I inserted a different SIM card into my S9 and again no issues, I could make and receive voice calls. It is only a problem with my sim in my phone. after this I received messages “No Service, selected network (spark nz) not available”. Telecom finally advised it is 100% hardware and return it to Samsung which I feel is not addressing any issues with their sim card compatibility. Could it be a faulty Antenna as Telecom advise or a sim ? Anything I can try if it is Antenna? Ps I cannot locate New Zealand in country search on your drop down list.

Solution: We don’t think it’s an antenna issue since you clearly said that the phone can do normal network functions with another SIM card. The most likely reason for the glitch may be one or some of your network settings. If it’s not a settings issue, then there may be a third party app behind it, or an operating system bug. To troubleshoot the problem, follow our suggestions below.

Reset network settings

Like any other phone, your S9 relies on correct network setup in order to communicate with your carrier’s network. Sometimes, network settings may become outdated or corrupted. To see if you have a network settings issue at hand, make sure to reset all network settings with the steps below. Resetting network settings resets all data connections back to the out of the box factory defaults. The following changes will occur by performing a Reset of network settings.

  • Stored Wi-Fi networks will be deleted.
  • Paired Bluetooth devices will be deleted.
  • Background data sync settings will be turned on.
  • Data restrictive settings in applications that were manually turned on/off by the customer will be reset to the default setting.
  • Network selection mode will be set to automatic.

The following device connections status will default to when the device was being powered on for the first time.

  • Airplane mode: OFF
  • Bluetooth: OFF
  • Data roaming: OFF
  • Mobile hotspot: OFF
  • VPN: OFF
  • Mobile data: ON
  • Wi-Fi: OFF

To perform a Network reset, follow these steps.

  1. From the Home screen, swipe up on an empty spot to open the Apps tray.
  2. Tap General Management > Reset > Reset network settings.
  3. Tap Reset settings.
  4. If you have set up a PIN, enter it.
  5. Tap Reset settings. Once complete a confirmation window will appear.

Third party app

At times, a bad third party app may cause problems if it’s incompatible with the current operating system, or with other apps. To check if there’s a third party app interference issue, restart the phone to safe mode and see how the network function works. Here’s how:

  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. Now that the phone is on safe mode, manually select the correct network again (your network under Settings > Connections) and see if everything is working.

Keep in mind that safe mode is a utility tool to help you check for third party interference by suspending third party apps from running. If your phone connects to your network properly and all network functions (SMS, MMS, voice calling, mobile data) work only in safe mode, you can bet you have a bad app issue. To identify which of your apps is causing the problem, you must use the process of elimination. Here’s what you need to do exactly:

  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.

Factory reset

Finally, you must consider wiping the phone thru factory reset if nothing works. Doing this solution should address possible bugs in the operating system. By returning all software information to their defaults, you eliminate any bug that may have developed in the OS.

Factory reset will erase all user data. Be sure to back your files up before doing it.

  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.

Work with your network operator

If not one of the proposed solutions won’t help at all, the problem must not be fixable at your level. Make sure to get help from your carrier so they can assist you in identifying the cause.

Problem #2: What to do if your Galaxy S9 voicemail stopped working

I returned from overseas and put back in my SIM card + ever since I haven’t been able to change my voicemail. I’m with CREDO. They troubleshooted every which way including 2 factory resets and a new SIM. Nothing worked. I still was getting “Sorry, voicemail is not available right now” after I’d recorded + pressed “1” to keep new message. They finally sent me a new phone which we all figured would work + to my amazement it STILL won’t work. Do you have any idea what could be wrong? I’m beginning to think my phone number is corrupted when it’s used with the voicemail?? I’m at my wit’s end. It’s been 3 weeks of this and it’s my business phone so… I don’t want an Iphone! 🙁

Solution: The problem must be coming from your carrier’s end. They may have deactivated voicemail in your account for some reason. This type of issue requires checking your account and only your carrier can do that. Be sure to contact them again to fix it. If needed, try to speak to a supervisor or anyone who can check deeper into your account. Your regular support agent may have limited tools to check deeper into the problem so try to speak to someone higher in your carrier’s support ladder.

Problem #3: Galaxy S9 screen becomes black and won’t turn on

Hi. I’m fairly certain that this is a hardware issue, but just on the off chance it isn’t I will inquire.  I have owned a Samsung Galaxy S9 for a few days . Prior to the incident, the phone was up and running fine. I set it down for a few moments and came back to a “dead screen” (as though it had turned itself off). I tried holding the power button and there was no reaction. I sought assistance through various threads (like yours) online, tried every ‘reboot’/’reset’ possibility and even took it to my provider (where I bought the phone) to no avail.  The weird thing, though, is that when I plug in the charger, you can feel the battery sucking up juice; i.e. the battery still works. I’m assuming it may be the processor? I’m hoping not the hard drive. I’m guessing I should just take it somewhere and have them run a diagnostics on it? Any information you have would be greatly appreciated. Thank you.

Solution: If you’ve already tried restarting the phone to other modes (Recovery Mode or Download Mode) to no avail, the problem is most likely isolated to the screen only (assuming the phone is not totally dead). Samsung Galaxy devices usually have robust screens but you may have one of the few defective units for this model. Since you are unable to fix a hardware issue by doing software tweaks, you want to let a professional take a look at the hardware. This is the only way to know if our suspicion is correct about the screen issue is correct or not

Problem #4: Galaxy S9 won’t charge either by wire or wireless charger

Hi. I have a Samsung S9 that worked perfectly until I purchased a new wireless fast charger.  I was using already another wireless fast charger but I needed a second one for another room. With the new one I realized that the phone was heating more than the previous one and sometimes I needed to take off my phone of the charger and put it back in to continue the charge because it stopped automatically  to charge by itself.

After 1 month of usage, one day my phone was not able to charge anymore. I tried my other wireless charger and it didn’t work neither. I tried to recharge with a cord and same problem occurred. So basically it’s not possible to charge my phone anymore nor with a cord or wireless. I thought that the battery burned because of the heat so I ordered a new battery that was charged at around 50% when I received it but the same problem persists, there is no way to charge my phone anymore. My question is do you think that my mother board is defective and needs to be replaced to get my charger working back? All the other functions on my phone still works perfectly except the charge which is more than necessary… Thanks in advance for your help.

Solution: Having two charging capabilities (wired and wireless charging) stop working at at the same time is clearly a motherboard issue. There may be a problem with the Power Management IC (PMIC) or some other related chips. To know what the problem really is requires a thorough hardware check. If possible, let Samsung do the repair to get a guaranteed result.


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