This article helps you troubleshoot low internal memory issues on your Lumia 635

You may have low internal memory issues if your phone is:

• Displaying low memory error messages
• Unable to install applications
• Freezing or unresponsive

These steps help identify and resolve the underlying cause. After completing each step, test to see if the issue is fixed. If not, continue to the next step.

Low memory issues can arise when you have too many applications on your Lumia 635 or when you need to clear your application cache.

1. Verify if your Lumia 635 has low memory.

   1. Swipe down from the top of the screen to open the action center.
   2. Tap ALL SETTINGS.
   3. Scroll to and tap storage sense.
   4. Refer to the phone section to verify if your phone has low memory.

2. Uninstall unused applications.

   Sprint recommends that you uninstall unused applications when possible. It helps free up internal memory and can improve device performance.

   Uninstall an application.

   Note: Your Lumia 635 comes with some pre-installed applications that you can't uninstall.

3. Change where your phone saves media, applications, and files.

   By default, your phone saves all applications, media, and files to internal memory. You can change the defalt settings to use the SD card instead.

   Note: You must have an SD card inserted into your phone to complete these steps.

   1. Swipe down from the top of the screen to open the action center.
   2. Tap ALL SETTINGS.
   3. Scroll to and tap storage sense.
   4. Scroll to the Change where you store your music, photos, apps, and more section, and tap to change each item as needed.

4. Perform a soft reset.

   A soft reset deletes any temporary files and can potentially free up internal memory.

   1. Turn your phone off.
   2. Remove the battery. After 10 seconds, reinsert the battery.
   3. Turn your phone back on.

Note: To optimize device performance, be sure your Lumia 635 is running the most recent device software. Check for software updates.

If you're still having issues, try the Sprint Community pages or make an appointment at a convenient Sprint Repair center for more help.