How to fix mobile data not automatically connecting when wifi is off on Galaxy S10 | Switch to mobile data not working

By design, your Galaxy S10 should automatically turn on if wifi is out of range. It is enabled by default but if you want to check it, it should be under your Wifi settings (Settings > Connections > Press and hold on your wifi network > More settings (three dots) > Advanced > Enable Switch to mobile data). If this is not happening, there must be a reason for it. This troubleshooting article will help you fix mobile data not automatically connecting when wifi is off on your Galaxy S10.

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How to fix mobile data not automatically connecting when wifi is off on Galaxy S10

The Galaxy S10 is equipped with smart wifi management system that automatically turns on mobile data if wifi signal is weak or non-existent. Although not exactly new to the S10, as previous models have the same feature, Samsung has greatly improved on it. Basically, your S10 will try to give you uninterrupted internet experience by making sure that mobile data kicks in automatically once wifi has been disconnected. On paper, this feature appears to work flawlessly but in reality, it doesn’t always work. If you have this issue on your S10, follow these guide to fix it.

Mobile data not automatically connecting fix #1: Confirm network is working

The first thing that you want to do is to ensure that the reason why mobile data is not automatically connecting is non-existent network. Mobile data needs a working cellular network. If there’s a network interruption or outage, or if your Galaxy S10 does not have any signal at all, mobile data won’t work at all. Sometimes, carriers will communicate with their subscribers if there’s any major network interruptions. If you recently receive such message, all you need to do is to wait until your carrier figures out a fix.

If you have another phone, try to insert your SIM card to it to see if mobile data works in that one. If it does, then you must continue troubleshooting below.

Mobile data not automatically connecting fix #2: Check signal strength

If you are positive that there’s no network interruption at all, another basic thing that you want to do is to ensure that your S10 has good signal strength. If you are in an area with a poor signal coverage, mobile data connection may keep on disconnecting. Or this can be the reason why mobile data may not be automatically connecting when wifi is out of range.

Mobile data not automatically connecting fix #3: Reseat SIM card

Sometimes, network issues occur if the SIM card is not properly inserted in the tray, or if it’s not making good contact with the board. To fix the problem, turn off your device and remove the SIM card tray. Then after 5 seconds, reinsert the SIM card, making sure that the card fits snugly in the slot. Afterwards, turn your phone back on and see what happens.

Mobile data not automatically connecting fix #4: Perform a soft reset

A lot of network issues on Galaxy S10 are caused by minor bugs. Should the problem return after rebooting the app itself, the next thing that you want to do is perform a soft reset. This should clear the system and possibly get rid of the bug as well. To do that, simply press and hold the Power and Volume Down buttons for about 10 seconds. Once the phone has restarted, release the buttons. This is usually effective in clearing bugs that developed when a system is left running for some time. We suggest that you restart your S10 using this method at least once a week to lessen the chances of bugs.

For some Galaxy S10, there may be a slightly different way to arrive at the same method. Here’s how:

  1. Press and hold the Power + Volume Down buttons for approximately 10 seconds or until the device power cycles. Allow several seconds for the Maintenance Boot Mode screen to appear.
  2. From the Maintenance Boot Mode screen, select Normal Boot. You can use the volume buttons to cycle through the available options and the lower left button (below the volume buttons) to select. Wait for up to 90 seconds for the reset to complete.

Mobile data not automatically connecting fix #5: Reset network settings

A bug in your phone’s network configuration may also be causing the problem. Make sure to include reset network settings in your list of troubleshooting to keep network settings in top shape. Here’s how you do that:

  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.

Mobile data not automatically connecting fix #6: Install carrier updates

Network troubles including the current issue may be due to poor or inefficient coding. Make sure that you install any pending or available software update there is. If this issue is a known one with some Galaxy S10, your carrier may already have released a fix for it.

Mobile data not automatically connecting fix #7: Wipe cache partition

In order to load apps quickly, Android stores frequently used items like website links, images, videos, ads, among others in a part in internal storage called cache partition. Sometimes, these items collectively called system cache may get outdated or corrupted causing performance problems or bugs. To ensure that you phone runs efficiently and the cache in top shape, you want to regularly clear the cache partition (about once every few months). When dealing with any app issue, this can also be one of the troubleshooting steps. Here’s how to do it:

  1. With your phone turned off, press and hold both the Volume Up and Power buttons simultaneously for at least 10 seconds.
  2. Let go of the buttons when the Honor logo appears.
  3. Shortly after seeing the logo, the EMUI screen shows up with the recovery mode options.
  4. Press the Volume Down button to scroll to and highlight Wipe cache partition option.
  5. Then press the Power button to confirm selection.
  6. Use the Volume buttons to scroll to and highlight the next options and Power button to confirm selection.

Mobile data not automatically connecting fix #8: Check for rogue apps

If the error happened right after installing a new app, you should delete the app and see if it fixes it. If not, then you continue to troubleshoot for the possibility of a bad third party app issue. To do that, you want to restart the device to safe mode.  Here’s how to do that:

  1. Press and hold the Power button until the Power off window appears then release.
  2. Touch and hold Power off until the Safe mode prompt appears then release.
  3. To confirm, tap Safe mode.
  4. The process may take up to 30 seconds to complete.
  5. Upon reboot, “Safe mode” appears in the lower-left of the home screen.

Remember that third-party applications are disabled in this mode so what you can use are pre-installed apps. If the touchscreen issue won’t appear on safe mode, that means that the problem is due to a bad app. Uninstall the app you recently installed and see if that will fix it. If the problem remains, use the process of elimination to identify the rogue app. Here’s how:

  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 S10 is still problematic, repeat steps 1-4.

Mobile data not automatically connecting fix #9: Reset app preferences

In case there’s a default app that’s been disabled by mistake causing the bug, make sure to reset app preferences.

  1. Open Settings app.
  2. Tap Apps.
  3. Tap on More settings at the upper right (three-dot icon).
  4. Select Reset app preferences.
  5. Restart your S10 and check for the problem.

Mobile data not automatically connecting fix #10: Reset software settings to defaults

You may have to wipe the phone and return all its software settings to defaults should nothing change all this time. Factory reset is usually effective in fixing software-related troubles. Since the most likely reason for this trouble is software or app, factory reset offers a good chance of fixing this.

Below are the two ways to factory reset your S10:

Method 1: How to hard reset on Samsung Galaxy S10 via Settings Menu

This is the easiest way to wipe your Galaxy S10. all you have to do is to go under Settings menu and follow the steps below. We recommend this method if you have no trouble going under Settings.

  1. Create a backup of your personal data and remove your Google account.
  2. Open Settings app.
  3. Scroll to and tap General management.
  4. Tap Reset.
  5. Select Factory data reset from the given options.
  6. Read the information then tap Reset to continue.
  7. Tap Delete All to confirm action.

Method 2: How to hard reset on Samsung Galaxy S10 using hardware buttons

If your case is that the phone is not booting up, or it boots but Settings menu is inaccessible, this method can be helpful. First, you need to boot the device to Recovery Mode. Once you successfully access Recovery, that’s the time that you begin proper master reset procedure. It may take some tries for you before you can access Recovery so be patient and simply try again.

  1. If possible, create a backup of your personal data ahead of time. If your problem prevents you from doing that, then simply skip this step.
  2. Also, you want to make sure that you remove your Google account. If your problem prevents you from doing that, then simply skip this step.
  3. Turn off the device. This is important. If you can’t turn it off, you’ll never be able to boot to Recovery Mode. If you are not able to shut the device off regularly via the Power button, wait until the phone’s battery is drained. Then, charge the phone for 30 minutes before booting to Recovery Mode.
  4. Press and hold the Volume Up button and the Bixby button at the same time.
  5. While still holding the Volume Up and Bixby keys, press and hold the Power button.
  6. The Recovery screen menu will now appear. When you see this, release the buttons.
  7. Use the Volume Down button until you are highlighting ‘Wipe data/factory reset.’
  8. Press the Power button to select ‘Wipe data/factory reset.’
  9. Use Volume Down to highlight Yes.
  10. Press the Power button to confirm factory reset.
  11. Mobile data not automatically connecting fix #11: Talk to your network operator

 


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