Samsung Gt18190n User Guide

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•	Do not remove the protective tape covering the antenna, as this can damage the 
antenna.
•	Do not insert a memory card into the SIM card slot. If a memory card happens to 
be lodged in the SIM card slot, take the device to a Samsung Service Centre to 
remove the memory card.
•	The SIM card slot of your device is only suited for standard SIM cards. Inserting a 
microSIM card or a microSIM card with an unauthorised holder may cause damage 
to the SIM card slot of your device.
•	Use caution not to lose or let others use the SIM or USIM card. Samsung is not 
responsible for any damages or inconveniences caused by lost or stolen cards.
3 Insert the battery.
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4 Replace the back cover.   
						

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Removing the SIM or USIM card and battery
1 Remove the back cover.
2 Pull out the battery.
3 Pull out the SIM or USIM card.   
						

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Charging the battery
Charge the battery before using it for the first time. Use the charger to charge the battery. A 
computer can be also used to charge the device by connecting them via the USB cable.
Use only Samsung-approved chargers, batteries, and cables. Unapproved chargers or 
cables can cause the battery to explode or damage the device.
•	When the battery power is low, the device emits a warning tone and displays a low 
battery power message.
•	If the battery is completely discharged, the device cannot be turned on 
immediately when the charger is connected. Allow a depleted battery to charge for 
a few minutes before turning on the device.
Charging with the charger
Plug the small end of the charger into the multipurpose jack of the device, and plug the large 
end of the charger into an electric socket.
Connecting the charger improperly may cause serious damage to the device. Any 
damage caused by misuse is not covered by the warranty.   
						

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•	The device can be used while it is charging, but it may take longer to fully charge 
the battery.
•	If the device receives an unstable power supply while charging, the touch screen 
may not function. If this happens, unplug the charger from the device.
•	While charging, the device 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.
•	If the device is not charging properly, take the device and the charger to a 
Samsung Service Centre.
After fully charging, disconnect the device from the charger. First unplug the charger from the 
device, and then unplug it from the electric socket.
Do not remove the battery before removing the charger. This may damage the 
device.
To save energy, unplug the charger when not in use. The charger does not have a 
power switch, so you must unplug the charger from the electric socket when not in 
use to avoid wasting power. The device should remain close to the electric socket 
while charging.
Checking the battery charge status
When you charge the battery while the device is off, the following icons will show the current 
battery charge status:
Charging Fully charged     
						

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Reducing the battery consumption
Your device provides options that help you save battery power. By customising these options 
and deactivating features in the background, you can use the device longer between charges:
•	When you are not using the device, switch to sleep mode by pressing the Power button.
•	Close unnecessary applications with the task manager.
•	Deactivate the Bluetooth feature.
•	Deactivate the Wi-Fi feature.
•	Deactivate auto-syncing of applications.
•	Decrease the backlight time.
•	Decrease the brightness of the display.
Inserting a memory card
Your device accepts memory cards with maximum capacities of 32 GB. Depending on the 
memory card manufacturer and type, some memory cards may not be compatible with your 
device.
•	Some memory cards may not be fully compatible with the device. Using an 
incompatible card may damage the device or the memory card, or corrupt the data 
stored in it.
•	Use caution to insert the memory card right-side up.
•	The device supports only the FAT file system for memory cards. When inserting a 
card formatted in a different file system, the device asks to reformat the memory 
card.
•	Frequent writing and erasing of data shortens the lifespan of memory cards.
•	When inserting a memory card into the device, the memory card’s file directory 
appears in the 
extSdCard folder under the internal memory.   
						

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1 Remove the back cover and battery.
2 Insert a memory card with the gold-coloured contacts facing downwards, and then push 
the memory card down.
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3 Push the memory card down into the slot and then slide it backwards until it locks into 
place.
4 Replace the battery and back cover.   
						

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Removing the memory card
Before removing the memory card, first unmount it for safe removal. On the Home screen, tap 
Apps → Settings → Storage → Unmount SD card.
1 Remove the back cover and battery.
2 Push the memory card into the slot until it disengages from the device, and then pull it 
out.
3 Replace the battery and back cover.
Do not remove the memory card while the device is transferring or accessing 
information. Doing so can cause data to be lost or corrupted or damage to the 
memory card or device. Samsung is not responsible for losses that result from the 
misuse of damaged memory cards, including the loss of data.
Formatting the memory card
A memory card formatted on a computer may not be compatible with the device. Format the 
memory card on the device.
On the Home screen, tap 
Apps → Settings → Storage → Format SD card → Format SD 
card
 → Erase everything.
Before formatting the memory card, remember to make backup copies of all 
important data stored on the device. The manufacturer’s warranty does not cover loss 
of data resulting from user actions.   
						

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Turning the device on and off
When turning on the device for the first time, follow the on-screen instructions to set up your 
device.
Press and hold the Power button for a few seconds to turn on the device.
•	Follow all posted warnings and directions from authorised personnel in areas 
where the use of wireless devices is restricted, such as aeroplanes and hospitals.
•	Press and hold the Power button and tap Flight mode to disable the wireless 
features.
To turn off the device, press and hold the Power button, and then tap 
Power off.
Holding the device
Do not cover the antenna area with your hands or other objects. This may cause connectivity 
problems or drain the battery.   
						

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Locking and unlocking the device
When not in use, lock the device to prevent unwanted operation. Pressing the Power button 
turns off the screen and puts the device into lock mode. The device automatically gets locked 
if it is not used for a specified period.
To unlock the device, press the Power button or the Home button when the touch screen is 
turned off, tap anywhere on the screen, and then flick your finger in any direction.
You can use motion to unlock the device. On the Home screen, tap 
Apps → Settings → Lock 
screen
 → Screen lock → Motion. To unlock the device with motion, tap and hold a point on 
the screen, and then tilt the device forwards.
Adjusting the volume
Press the Volume button up or down to adjust the ringtone volume, or to adjust the sound 
volume when playing music or video.   
						

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Switching to silent mode
Use one of the following methods:
•	Press and hold the Volume button down until it switches to silent mode.
•	Press and hold the Power button, and then tap Mute.
•	Open the notifications panel at the top of the screen, and then tap Sound.
Set the device to alert you to various events in silent mode. Press and hold the Power button, 
and then tap 
Vibrate.