Fix Network Problems In Samsung Galaxy S2 Korean Version

Edited by Leomar Umpad, Lynn, Eng, Laurel Waddell and 15 others

14 Parts: Fixing Network Problems in S2 Korean Version Check to see if your location has a good, stable signal. Check to make sure the Problem is not with your SIM Card Check to see if there are issues or maintenance with the network provider.
...More

If you are experiencing network problems with your phone, this VisiHow article may be able to help you. There are many reasons why you may be experiencing problems. This article will tackle possible causes for the problems, and offer fixes for these issues. A pictured guide has been included for your reference, so you will have be able to view the procedures for fixing the network problems in your Samsung Galaxy S2 Korean Version. '

0 fix network problems in samsung galaxy S2 korean version.PNG

Though you can jump from one fix to any of the other suggested fixes on the diagram, it is advisable that you view them from the start and follow the arrows until you solve your network problems. This article will follow the diagram's flow since it was designed to start with the easiest fix and progress to the more complicated solutions. As a summary, the solutions are the following:

Fixing Network Problems in S2 Korean Version

  1. 1
    Check to see if your location has a good, stable signal.
    Was this step helpful? Yes | No| I need help
  2. 2
    Check to make sure the problem is not with your SIM card.
    Was this step helpful? Yes | No| I need help
  3. 3
    Check to see if there are issues or scheduled maintenance from your network provider.
    Was this step helpful? Yes | No| I need help
  4. 4
    Check to see if your phone is still under warranty
    .
     
    1. If it is still under warranty, do not make any changes or attempt repairs. This will void the warranty. Take your phone to a Samsung Service Center.
    2. If it is not under warranty, root your device, as the next fixes require a rooted phone. Rooting gives you access to the administrative commands and functions of your phone.
    Was this step helpful? Yes | No| I need help
  5. 5
    Perform a reset on your phone.
    Was this step helpful? Yes | No| I need help
  6. 6
    Check your phone's IMEI for problems on it.
    Was this step helpful? Yes | No| I need help
  7. 7
    Restore phone settings using a backup file (if available).
    Was this step helpful? Yes | No| I need help
  8. 8
    Reflash phone with a stock ROM.
    Was this step helpful? Yes | No| I need help
  9. 9
    Use the EFS Fix zip file to solve your network issues.
    Was this step helpful? Yes | No| I need help
  10. 10
    Manually perform an EFS fix on your S2 Korean Version.
    Was this step helpful? Yes | No| I need help
  11. 11
    Fix the RIL-Baseband compatibility issues of your phone.
    Was this step helpful? Yes | No| I need help
  12. 12
    If all else fails, have your device checked by a service center.
    Was this step helpful? Yes | No| I need help

Check to see if your location has a good, stable signal.

Wireless Signal's reception varies from location to location. This could be the reason you're experiencing network problems on your S2 Korean version. To determine if there is a problem with the location:

  1. 1
    Check your phone's signal indicator to see if it is on a low signal icon.
    Was this step helpful? Yes | No| I need help
  2. 2
    Check with other people in the same location (with the same network as you), to see if they are experiencing the same problems.
    Was this step helpful? Yes | No| I need help
  3. 3
    Try moving to another location and then check to see if the issue has been resolved.
    Was this step helpful? Yes | No| I need help
  4. 4
    If your problem has been fixed with any of these solutions, you can start using your phone again.
    Was this step helpful? Yes | No| I need help
  5. 5
    If the problem has not been fixed by moving to another location, or other people in your location do not have the problem, then proceed with the next solution.
    Was this step helpful? Yes | No| I need help

Check to make sure the Problem is not with your SIM Card

Constantly removing and reinserting your SIM card may damage it. Follow the procedures below to see if there is a problem with your SIM Card:

  1. 1
    Remove the SIM card from your phone and insert it to another phone.
    Was this step helpful? Yes | No| I need help
  • 2
    If the problem is evident on the other phone you're testing it on, then the problem is with your SIM card
    .
    Replace it and you should be able to fix the problem. You can retain your number by calling your network's customer service representatives and asking for a number retention service.
    Was this step helpful? Yes | No| I need help
  • 3
    If the problem is just on your phone, and the other phone works fine with your SIM Card, you know it's not an issue with your SIM card.
    Was this step helpful? Yes | No| I need help
  • 4
    Perform the next solution if this is the case.
    Was this step helpful? Yes | No| I need help

    • Check to see if there are issues or maintenance with the network provider.

    There are times your network provider will perform maintenance and other actions that may affect network service. You may do any of the following to see if there is a network related issue within your area.

    1. 1
      Check with other people in the same location (with the same network as you), to see if they are experiencing problems with their network signals too.
      Was this step helpful? Yes | No| I need help
    2. 2
      Call your network's customer care and ask if there are network-related activities in your area that might be causing the problems you are experiencing.
      Was this step helpful? Yes | No| I need help
    3. 3
      Check with the network's customer care to see if your phone or SIM card has been blocked from any network services.
      Was this step helpful? Yes | No| I need help
    4. 4
      If there are no service interruptions from your network provider, then proceed with the next solution.
      Was this step helpful? Yes | No| I need help

    Check if your phone is still under warranty.

    The next solutions will require you to have a rooted phone, so you should check to see if your phone is still under warranty, as rooting your phone will void its warranty.

    1. 1
      If your phone is still under warranty, have it checked and repaired by the service center
      .
      Usually, repairs of these kinds are free as long as you did not void your phone's warranty.
      Was this step helpful? Yes | No| I need help
    2. 2
      If the warranty of your phone has expired, you may consider rooting it
      .
      Full instructions on rooting your phone can be found in this VisiHow article.
      Was this step helpful? Yes | No| I need help

    Update Samsung Galaxy S2 to Android 4.3 Jelly Bean

    Perform a reset on your Samsung Galaxy S2 Korean version.

    If you have installed an application recently or have deleted an important system file, you may want to perform a reset on your phone. A reset will restore your phone to its original settings. The process will also delete all of your phone's data so it is wise if you perform a backup procedure before proceeding.

    Back up your Samsung Galaxy S2's data.

    1. 1
      Go to your phone's Home Menu and tap the Application menu icon (lower-right portion of the touch screen.)
      Was this step helpful? Yes | No| I need help
    2. 2
      From the Applications folder, go to Settings (gear icon)
      Was this step helpful? Yes | No| I need help
    3. 3
      From Settings, tap on Accounts & Sync.
      Was this step helpful? Yes | No| I need help
    4. 4
      Tap "Add account" and enter your Google account username and password.
      Was this step helpful? Yes | No| I need help
    5. 5
      Go to Settings and tap on Privacy.
      Was this step helpful? Yes | No| I need help
    6. 6
      Put a check mark on "Back Up My Data" and "Automatic Restore".
      Was this step helpful? Yes | No| I need help
    7. 7
      Go to Settings and tap on Accounts and sync.
      Was this step helpful? Yes | No| I need help
    8. 8
      Choose what data you want to backup.
      Was this step helpful? Yes | No| I need help
    9. 9
      Backup will now start.
      Was this step helpful? Yes | No| I need help
    10. 10
      Done.
      Was this step helpful? Yes | No| I need help

    Perform a Reset on Samsung S2

    After making sure you have properly backed up your phone, you can now proceed with the reset procedures below:

    1. 1
      Go to your phone's Home Menu and tap the Application menu icon (lower-right portion of the touch screen.)
      Was this step helpful? Yes | No| I need help
    2. 2
      From the Applications folder, go to Settings (gear icon)
      Was this step helpful? Yes | No| I need help
    3. 3
      From Settings, tap on Backup and reset.
      Was this step helpful? Yes | No| I need help
    4. 4
      From there, tap on Factory data reset.
      Was this step helpful? Yes | No| I need help
    5. 5
      Tap on reset device and choose Delete all.
      Was this step helpful? Yes | No| I need help
    6. 6
      You are done resetting your phone
      .
      Was this step helpful? Yes | No| I need help
    7. 7
      Alternatively, you can dial *2767*3855$# to reset your phone easily.
      Was this step helpful? Yes | No| I need help
    8. 8
      Done.
      Was this step helpful? Yes | No| I need help

    Now, check if the reset has corrected your network problems with your phone. If it hasn't solved the issue, then proceed with the next procedure.

    Check your phone's IMEI (International Mobile Equipment Identity) for problems.

    Sometimes network errors are caused by problems on your IMEI. Some phones whose IMEI has been altered may have occasional loss of network connectivity. To check your phone's IMEI, do this:

    1. 1
      Check for your phone's current IMEI by dialing *#06#
      .
      Was this step helpful? Yes | No| I need help
    2. 2
      You can also check your IMEI by going to Settings > About Phone > Status
      .
      Scroll your screen down until you will see the information.
      Was this step helpful? Yes | No| I need help
    3. 3
      Check if the same IMEI number is on the back of your phone
      .
      Was this step helpful? Yes | No| I need help
    4. 4
      If the IMEI of your phone does not match what is indicated on your phone's back; or your IMEI starts with 0000 or 0049, then you have a problem with your IMEI
      .
      Try either of these two solutions:
       
      1. If available, restore your phone from a saved backup.
      2. If no backup is available, you can flash a stock ROM to your phone using ODIN. The section "Steps to Update Galaxy S2 to Jelly Bean 4.3" under the VisiHow article on how to Update Samsung Galaxy S2 to Android 4.3 Jelly Bean will guide you on how to use ODIN to flash a firmware (ROM).
      Was this step helpful? Yes | No| I need help
    5. 5
      If none of these suggestions work, you may proceed to the next steps.
      Was this step helpful? Yes | No| I need help

    Use the EFS Fix zip file to solve your network issues.

    You can use a file to fix your network issues by using ADB. To do it, follow the procedures below:

    1. 1
      Download and install Samsung Kies to your computer
      .
      Was this step helpful? Yes | No| I need help
    2. 2
      Download and install SDK installer on your PC.
      Was this step helpful? Yes | No| I need help
    3. 3
      Download the EFS Fix zip file here.
      Was this step helpful? Yes | No| I need help
    4. 4
      Unzip the EFS Fix zip file to your Desktop so you can easily locate it.
      Was this step helpful? Yes | No| I need help
    5. 5
      Turn off your phone and restart it into CWM recovery mode
      .
      To do it press and hold Power button + Volume Down + Home Menu until the phone starts.
      Was this step helpful? Yes | No| I need help
    6. 6
      Using your volume buttons for navigation and the Home button for confirmation, go to Mounts and storage and choose "mount /efs".
      Was this step helpful? Yes | No| I need help
    7. 7
      Connect your phone and your computer using a USB cable.
      Was this step helpful? Yes | No| I need help
    8. 8
      Open the CDM (command prompt) on your PC and go to the unzipped adb
      .
      Was this step helpful? Yes | No| I need help
    9. 9
      Type "adb devices" into command prompt so that your computer will detect your device.
      Was this step helpful? Yes | No| I need help
    10. 10
      Type "adb push keystr /efs/IMEI" to put the keystr file into the IMEI directory.
      Was this step helpful? Yes | No| I need help
    11. 11
      Reboot your phone and check if the problem has been fixed
      .
      You can also do this manually by following the procedure below.
      Was this step helpful? Yes | No| I need help

    Manually Perform an EFS Fix on your S2 Korean Version.

    If for some reason you are not able to perform the previous fix, you can do it manually by following these procedures:

    1. 1
      Download and install ES File Explorer on your phone.
      Was this step helpful? Yes | No| I need help
    2. 2
      Open ES File Explorer
      .
      Tap on the Menu button to open "Settings," and put a check mark on the root settings.
      Was this step helpful? Yes | No| I need help
    3. 3
      Using ES file Explorer, navigate to "/efs/IMEI"
      Was this step helpful? Yes | No| I need help
    4. 4
      Tap on "Menu" and create a file with the file name, "keystr"
      Was this step helpful? Yes | No| I need help
    5. 5
      Set permissions to "rwx-rwx-rwx."
      Was this step helpful? Yes | No| I need help
    6. 6
      Reboot your phone and check to see if the problem has been fixed
      .
      If it network issues remain, proceed with the next procedure.
      Was this step helpful? Yes | No| I need help

    Fix the RIL-Baseband Compatibility Issues on your Phone

    This is a very common issue if one modifies a Korean phone's firmware to... Remove SMS Limit in Samsung Galaxy S4 (Korean Version). A technician may flash the wrong baseband version, thus causing the network radio of the phone to function abnormally. To solve this:

    1. 1
      Download and install GetRIL on your phone.
      Was this step helpful? Yes | No| I need help
    2. 2
      Open "GetRIL" and tap on the "Scan" button.
      Was this step helpful? Yes | No| I need help
    3. 3
      The application will scan for your Radio Interference Layer (RIL) and Baseband compatibility.
      Was this step helpful? Yes | No| I need help
    4. 4
      GetRIL will then tell you if your RIL and Basebands are compatible
      .
      0RIL match fix network problems in samsung galaxy S2 korean version resize.PNG
      Was this step helpful? Yes | No| I need help
    5. 5
      If they are not compatible, GetRIL will tell you what Baseband is compatible with your phone.
      0RIL Does not match fix network problems in samsung galaxy S2 korean version resize.PNG
      Was this step helpful? Yes | No| I need help
    6. 6
      Search and download for the recommended baseband and flash it via ODIN, using the procedures from the article on Update Samsung Galaxy S2 to Android 4.3 Jelly Bean.
      Was this step helpful? Yes | No| I need help

    Galaxy S2 SIM Card not working: Hardware Solution

    If you have tried all the possible software fixes on your Samsung Galaxy S2 and your phone still does not get a network signal, then it could be a hardware problem. You may need to perform any of the following on your phone to get a network signal and for it to read and recognize the inserted SIM card:

    1. 1
      Make sure that your phone is not network-locked
      .
      If you got your phone as part of a plan from a network, chances are your phone could be carrier-locked. No matter what you do, if your phone is network-locked, you cannot use another SIM card in it unless it's a SIM card from the same network. You need to give a network-unlocking service to your phone so you can use a SIM card from other networks. There are a lot of trusted online unlocking services available that give you unlocking codes for a fee, but if possible, it's always advisable to get the unlocking service physically from a capable technician. Just make sure that you won't have problems with your contract with the service provider if you plan to use the unlocking service. See to it that you have reviewed the contract and the terms of service for using the phone.
      Was this step helpful? Yes | No| I need help
    2. 2
      Clean the terminals of the SIM slot reader of your phone
      .
      Check if the terminals of your phone are clean. As time goes by, especially if you are frequently in a dusty area, dirt can build up on your phone's SIM card terminals. This build-up of dirt can hinder the connection of the SIM card slot terminals and the SIM causing problems with SIM detection.
      Was this step helpful? Yes | No| I need help
    3. 3
      Clean the terminals of the SIM card
      .
      Similar to the SIM slot reader, build-up of dirt on the terminals of your SIM card can cause problems with the connection between the SIM slot and the SIM card. You can use a little pointed object to clean the dirt in between the linings but do so it gently so you won't damage the SIM card.
      Was this step helpful? Yes | No| I need help

    Bring your device to a service center.

    All areas have been fully covered. If you have tried each solution to no avail, then it is time to bring your Samsung Galaxy S2 Korean version to your authorized service center. This may be a hardware problem and the only fix for this may be to replace it with a new network radio. There are several things you can do to fix software related issue, but if the problem is with the hardware, let the service center handle it.

    Questions and Answers

    How to fix my Galaxy S2 shw-m250k v4.0.4?

    Problem is no baseband version no IMEI no signal. Please help

    It looks like you were trying to flash a custom ROM and the process messed up your phone's baseband and IMEI info. You can use ODIN software and try to flash back a stock ROM to restore your baseband and IMEI.

    To do this, you will need the ODIN software for your PC. Download the latest version here:

    http://www.android.gs/download-odin-1-85/

    You'll also need Samsung's USB mobile drivers, found here:

    http://developer.samsung.com/android/tools-sdks/Samsung-Android-USB-Driver-for-Windows

    Lastly, you'll need the stock ROM image file for your SHW-M250K model.

    With the files downloaded and setup, you'll need to connect your phone to the computer. Have the ODIN software open, and boot the phone into download mode by pressing/holding power, volume down and home buttons together. When connected to your computer, the com port window should be lit - if the USB drivers were installed correctly. Use the pda button to browse for the stock ROM file you downloaded and hit Start to flash the firmware.

    How to upgrade it to normal version of S2. I do not understand it.

    I do not understand it because it was so tough to configure

    The best way to get your device back to its original settings and version, is to perform a Hard Reset on the device. Based on your question you have not provided what you have altered on your device in order for me to help you to re configure without having to perform a Hard Reset.

    You can upgrade to your normal version by either completing a factory data reset on your device or by going to Settings>>>About Device>>Update Firmware, which will take you back to the version that is recommended for your device.

    Internet not working on Samsung Galaxy S4.

    I am using Samsung GT-i9500 Galaxy S4 version. But this is a clone phone. I am from Maldives. There is no problem in the network. But I couldn't connect to the internet. Can you please solve this issue?

    If the internet is not working on your device, then you are going to need to perform the following steps before you contact your carrier to help you with your Internet settings through the network.

    -Go to settings.

    -Go connections.

    -Go to mobile network data and disable this option.

    -Go back the enable the settings.

    This will give you a simple reset on your device so that you will be able to reset to fix your problem. If this does not work, then you are going to need to contact your carrier to that they can reset your settings on your browser and internet on your device.

    See more questions like this: How to reset my Samsung Galaxy S4 i9500 made in Korea

    How did it happen that my message limit changed to only 90 characters? I cannot send a longer message because of this limitation.

    When I reach the 90-character limit of the message, it automatically turns to MMS. That's why my message doesn't send. I tried to change the settings many times. I formatted the phone twice but it does not change anything. I don't know how, but it just happened.

    VisiHow QnA. This section is not written yet. Want to join in? Click EDIT to write this answer.

    No signal on US Cellular SCH-R970?

    First I lost my IMEI. Then I repaired it, but H/W version is unknown and there is No Signal.

    VisiHow QnA. This section is not written yet. Want to join in? Click EDIT to write this answer.

    Where can I see the application when I am balancing the load?

    Can't see where should I balance the load

    VisiHow QnA. This section is not written yet. Want to join in? Click EDIT to write this answer.

    Hello. Can you suggest a proper solution for my problem?

    Sir, I have a Samsung Galaxy S2, model number SHV-E110S Korean set and now I am in Nepal. I have a strange problem with it. First my SIM was damaged and I replaced it with a new SIM. After replacing the new one, a problem occurred that made the network fluctuate randomly. It fluctuates about every minute, and when I make a call, the signal goes out of service. One important thing is that only the replaced SIM has this problem. Another SIM works fine. What can I do, Sir? Please note that I have replaced 3 SIM having the same number but the problem is the same on all of them.

    VisiHow QnA. This section is not written yet. Want to join in? Click EDIT to write this answer.

    If you have problems with any of the steps in this article, please ask a question for more help, or post in the comments section below.

    Comments

    Article Info

    Categories : Samsung Galaxy

    Recent edits by: Jay, VC, DeleteQnA

    Share this Article:

    Thanks to all authors for creating a page that has been read 65,640 times.

    x

    Thank Our Volunteer Authors.

    Would you like to give back to the community by fixing a spelling mistake? Yes | No