Samsung SM-J105B User Manual page 12

Basics
• T he device can be used while it is charging, but it may take longer to fully charge the
battery.
• I f the device receives an unstable power supply while charging, the touchscreen may not
function. If this happens, unplug the charger from the device.
• W hile charging, the device and the charger may heat up. This is normal and should not
affect the device's lifespan or performance. If the battery gets hotter than usual, the
charger may stop charging.
• I f the device is not charging properly, take the device and the charger to a Samsung
Service Center.
Ultra power saving mode
Use this mode to extend the device's battery power. In ultra power saving mode, the device
performs the following:
• R estricts the available apps to essential and selected apps only.
• D eactivates the mobile data connection when the screen turns off.
• D eactivates the Wi-Fi and Bluetooth features.
On the Home screen, tap
tap the switch to activate it.
To deactivate ultra power saving mode, tap MORE → Turn off Ultra power saving mode.
The usage time left shows the time remaining before the battery power runs
out. Usage time left may vary depending on your device settings and operating
conditions.
→ Settings → Battery → Ultra power saving mode, and then
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