Help & support guides for your Samsung Galaxy S21 Ultra 5G
If your phone gets slow, there may be several causes of the problem.
If you've used many apps on the phone, it may get slow because the apps keep running in the background.
Solution: End running applications
Press the Application key.
To end one running application, slide your finger upwards on the required application.
To end all running applications, press Close all.
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If the phone is slow for no apparent reason, it may help restarting it.
Solution: Restart your phone
Press the Side key.
Simultaneously, press and hold the lower part of the Volume key and keep them both pressed until your phone restarts.
