Device Guides

Samsung Galaxy S21 5G

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My mobile phone is slow

This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.

Possible cause 1:

There are too many running applications: End running applications.

List view

1. End running applications

Tap the Application key.
To end one running application, slide your finger upwards on the required application.
To end all running applications, tap Close all.
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