Skip to content Skip to accessibility help

Choose your location or language

This site uses cookies to enhance your web site experience. By continuing to browse or use this site, you are agreeing to our use of cookies. See our privacy policy here.

Close Close

Want to get hands-on with latest Galaxy device?

Come meet a Samsung representative for your S10 purchase

A Samsung representative at Best Buy will call to schedule your Galaxy S10 try out.
Please share your ZIP Code to find a nearby Best Buy to try out your next phone.

A Samsung representative at Best Buy can set up a personal demonstration for your next galaxy device.
Please share your ZIP Code to find a nearby Best Buy location

sales rep

, our Samsung representative, wants to know about you so they can assist you better.

, our Samsung representative at Best Buy, want to know about you to set up a personal demonstration on your next galaxy device.

NO, THANKS NO, THANKS

By submitting this form you acknowledge you have read the Privacy Policy Privacy Policy and consent to receiving calls/texts from Samsung representative. Message and data rates may apply.

thankyou-mark

We will see you soon!

sales rep

, our Samsung representative will be in touch with you.

Buy the Samsung Galaxy Note10/Note10+ and get 6 months of Spotify Premium for free.

  1. Home
    2. /
  2. Cannot install apps from unknown sources on a Samsung phone or tablet

Cannot install apps from unknown sources on a Samsung phone or tablet

By default, your phone is set to prohibit app installation from sources other than the Play Store and Galaxy Apps. However, you can change this setting if desired. Please be aware that this can increase security risks.

Related Content
Phone or tablet displays volume limit reached message
Phone or tablet displays volume limit reached message
The Media volume limiter feature on your phones or tablets prevents the volume from rising above a set level to protect your ears from hearing damage. The limitation is only applied when you use headphones or Bluetooth speakers, and can be protected by a PIN. If the feature is on, a "Volume limit reached" popup will appear each time you increase th
 Connect a Phone to a Tablet Using SideSync
Connect a Phone to a Tablet Using SideSync
You can share screens and data between your phone and tablet to make multitasking easier. All you need to do is download and use the SideSync app on both devices. Once you connect the phone and tablet, youundefinedll be able to do so much more.
 Samsung Galaxy phone or tablet's GPS signal is lost
Samsung Galaxy phone or tablet's GPS signal is lost
There are several reasons why a phone's or tablet's GPS signal may not work properly, such as a communication failure with the satellite. Other times, it could be because your Location is disabled or because you are not using the best Location method.
 Audio stops playing on Samsung mobile devices or accessories
Audio stops playing on Samsung mobile devices or accessories
If your phone or tablet is running Android 9.0 (Pie), audio playback may stop after a brief time if the device or app goes to sleep. Whether you're streaming music from third-party apps like Spotify, using your new Galaxy Buds, or listening to audio files on your phone, you'll need to update the sleeping apps settings on your device to prevent this
 Phone or tablet will not power on or off
Phone or tablet will not power on or off
Your phone or tablet may not turn on if you are not charging it properly. But on the other hand, it may not turn off if it's completely frozen. If it's is not responding to you pressing the power button, let us help you get it working again.
Share Video
7 people found this helpful.
Was this content helpful?

How would you like to contact us?

Give us a call 1-800-SAMSUNG (1-800-726-7864)
Mon – Sun: 8AM – 12AM (EST) Printer support visit: hp.com/support/samsung

Message Us

Live Chat support with a Samsung Care Pro.

24 HOURS 7 DAYS A WEEK
Message Us

Help with new/existing order

(1-855-726-8721) Samsung experts standing by 8 am to 12 am EST, 7 days a week

ORDER SUPPORT

SMS Chat

Text SMSCARE to 62913 to receive live support 24/7*

* Standard text message and data rates may apply

Social Support

Contact us on Twitter or Facebook and we'll reply with an answer to your question or issue.

Ask the Community

Browse answers, ask questions and get solutions from other Samsung customers.

JOIN DISCUSSION

Question about a promotion?

Learn more about Samsung promotions.

SAMSUNG PROMOTIONS
Contact
  • Give us a call Speak directly with a Samsung Pro or schedule a time for us to call you
  • General Mon-Fri: 8am- 12 am (EST) Sat-Sun:9am - 11 pm (EST) 1-800-726-7864
  • Mobile Mon - Sun: 12am - 12 pm 1-800-726-7864
  • Home Appliances Sat-Sun:9am -6pm(EST) 1-800-726-7864
Fast, easy checkout with Shop Samsung App
Easy sign-in, Samsung Pay, notifications, and more!
Get the app
Or continue shopping on Samsung.com
×
The Shop Samsung app
Free standard shipping, exclusive offers and financing options.
GET
×
The Shop Samsung app
Free standard shipping, exclusive offers and financing options.
GET
×

You Are About To Be Redirected To Investor Relations Information for U.S.

Thank you for visiting Samsung U.S. Investor Relations. You will be redirected via a new browser window to the Samsung Global website for U.S. investor relations information.
CANCEL
CONTINUE
×

Redirect Notification

As of Nov. 1, 2017, the Samsung Electronics Co., Ltd. printer business and its related affiliates were transferred to HP Inc.

For more information, please visit HP's website: http://www.hp.com/go/samsung


Select CONTINUE to visit HP's website.

CANCEL
CONTINUE