title:

Show upload mode crash

(Post creation time:  

05-1-2026 12:24 PM

)

151 Views

V

vimal_003

Beginner Level 2

last edited

 

05-1-2026 12:25 PM

 

in

 
When i using sm m21 show black and white screen and show upload mode error 
  • G

    goodthings

    Expert Level 5

    05-1-2026 02:40 PM

     

    in

     
    Kindly go to service center for check and resolves this issue. If you like please accept it's a as solution it's help to other users also, click on 3dots in my reply section and click on accept solution. You're welcome to here.

    0 likes

  • C

    cs_member10

    Moderator

    05-2-2026 08:31 AM

     

    in

     


    Dear Samsung Member,

    Greetings from Samsung Customer Support!

    As per your concern, we would request you to kindly perform the following steps to resolve your issue.

    ● Clear app cache through Device care:
    Settings > Device care > Storage > CLEAN NOW.

    ● Reset the device Settings: Settings > General Management > Reset settings>Reset all settings to their default.

    ● Kindly restart the device: Press the power and volume down keys simultaneously for a few seconds.

    ● Kindly remove the current fingerprint and set up the fingerprint again. When you touch the sensor to set up a fingerprint, make sure you set the entire fingerprint, including the outer area of your fingertip. Setting the entire fingerprint area enables successful fingerprint recognition with any grip.

    ● Update the software if available: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-update-software/

    ● You can reset your device by following the steps.
    1. Kindly create a data backup of your device via the SMART switch mobile application or http://www.samsung.com/in/support/smartswitch pc suite.
    2. Remember the Google password before resetting the device because it is required during initial setup.
    3.If you do not remember password then advise to reset (Forgot password) your Google account.

    Path: Settings> General Management.>Reset>Temporary cloud backup or External storage backup>After backup tab on Factory data reset to reset your device to its factory default settings.
    This will erase all data, including files and downloaded apps.

    If the issue still occurs, please visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/

    Warm Regards,
    Samsung Customer Support

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