User Manual
Table Of Contents
- Samsung Galaxy S21 5G|S21+ 5G|S21 Ultra 5G User manual
- Contents
- Getting started
- Galaxy S21 5G
- Galaxy S21+ 5G
- Galaxy S21 Ultra 5G
- Set up your device
- Start using your device
- Turn on your device
- Use the Setup Wizard
- Transfer data from an old device
- Lock or unlock your device
- Side key settings
- Accounts
- Set up voicemail
- Navigation
- Navigation bar
- Customize your home screen
- S Pen
- Bixby
- Digital wellbeing and parental controls
- Always On Display
- Biometric security
- Mobile continuity
- Multi window
- Edge panels
- Enter text
- Emergency mode
- Camera and Gallery
- Apps
- Settings
- Access Settings
- Connections
- Sounds and vibration
- Notifications
- Display
- Dark mode
- Screen brightness
- Motion smoothness
- Eye comfort shield
- Screen mode
- Font size and style
- Screen zoom
- Screen resolution
- Full screen apps
- Screen timeout
- Accidental touch protection
- Touch sensitivity
- Show charging information
- Screen saver
- Lift to wake
- Double tap to turn on screen
- Double tap to turn off screen
- Keep screen on while viewing
- One‑handed mode
- Lock screen and security
- Screen lock types
- Google Play Protect
- Security update
- Find My Mobile
- Samsung Pass
- Secure Folder
- Secure Wi-Fi
- Private Share
- Samsung Blockchain Keystore
- Install unknown apps
- Password for factory data reset
- Set up SIM card lock
- View passwords
- Device administration
- Credential storage
- Advanced security settings
- Permission manager
- Samsung Privacy
- Location
- Accounts
- Device maintenance
- Accessibility
- Other settings
- Learn more
- Legal information
Settings
162
Device maintenance
View the status of your device’s battery, storage, and memory. You can also
automatically optimize your device’s system resources.
Quick optimization
| Batte
ry
| Stor
age
| Memo
ry
| Adva
nced device care options
| Lang
uage
and input
| Date
and time
| Cust
omization service
| Trou
bleshooting
Quick optimization
The quick optimization feature improves device performance through the following
actions:
•
Identifying apps that use excessive battery power and clearing unneeded items
from memory.
•
Deleting unnecessary files and closing apps running in the background.
•
Scanning for malware.
To use the quick optimization feature:
◌
From Settings, tap Battery and device care > Optimize now.
Battery
View how battery power is used for your various device activities.
◌
From Settings, tap Battery and device care > Battery for the following
options:
•
Usage since last full charge: View your recent battery usage by time, app, and
service.
•
Power saving mode: Save battery life by turning off Motion smoothness and
limiting background network usage, syncing, and location checking. Choose
from additional power saving options to save more power when this mode is
enabled.
•
Background usage limits: View apps that you don’t use often and limit their
battery usage. To disable this feature, tap Put unused apps to sleep.
•
Wireless power sharing: Enable wireless charging of supported devices with
your device’s battery.