Troubleshoot when your Samsung Galaxy S 4 slows, freezes, or turns off unexpectedly

Last Updated: May 12, 2015

This article helps troubleshoot your Samsung Galaxy S 4 slowing, freezing, or turning off unexpectedly.

You may have performance issues if your Samsung Galaxy S® 4:

  • Performs slowly
  • Freezes
  • Turns off or unexpectedly restarts
  • Displays error messages
  • Is unable to install or update applications

Try each of these steps to see if it helps improve your phone's performance.

  1. Safely remove your SD card.

    1. From the home screen, tap Apps.
    2. Scroll to and tap Settings.
    3. Tap the MORE tab.
    4. Scroll to and tap Storage.
    5. Scroll to and tap Unmount SD card.
    6. Tap OK.
    7. Remove the SD card.
  2. Perform a soft reset.

    A soft reset restarts your phone and does not erase any of your content or data.

    1. With the phone powered on, remove the battery.
    2. After 30 seconds, reinsert the battery.
    3. Press and hold the Power key to turn your Samsung Galaxy S 4 back on.
    4. Test your device to see if the issue is resolved.
  3. Use Sprint Zone to determine if your phone has low memory.

    1. Access Sprint Zone.
    2. Swipe from Right to Left to open Device Diagnostics.
    3. Tap Storage.
    4. Check the Available listing under the Overview section to determine if your phone has low memory.
    5. Clear the application cache.

      • Clear the application cache on your applications to free up space and improve performance.
      • Be sure you clear only the application cache and not the application data.
      • When you clear the application data, it removes your personal settings and info such as login information and high scores.
      • Clearing the application cache doesn't remove your personal settings or information.

      1. From Device Diagnostics, tap Power Usage.
      2. Tap Battery Usage.
      3. Tap an application.
      4. Tap App info
      5. Tap Clear cache.
    6. Close or uninstall applications.

      • Some apps run in the background when you are not using them.
      • Also, some apps consume more energy than others.
      • Some apps come pre-loaded on your phone and you can't uninstall them.

      1. From Device Diagnostics, tap Power Usage.
      2. Tap Battery Usage.
      3. Tap the application you want to close or uninstall.
        • Close (turn off) an application: Tap Force stop.
        • Uninstall (remove from phone) an application: Tap App info, Uninstall, and then OK.
    7. Verify that your Samsung Galaxy S 4 is running the most recent software.

      1. From Device Diagnostics, tap System Updates.
      2. Tap Device Software.
        • If an update is available, follow the prompts to install.

    If you're still having issues, try our community pages for the Samsung Galaxy S 4 or make an appointment at a convenient Sprint Repair center.

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