8
9
• Keep the battery away from excessive heat and direct s unlight. Do not place it on or in
heating devices, such as microwave ovens, stoves, or radiators. Batteries may explode if
overheated.
• Do not attempt to modify or remanufacture the battery, insert foreign objects into it, or
immerse or expose it to water or other liquids. Doing so may lead to fire, explosion, or other
hazards.
• If the battery leaks, ensure th at the electrolyte does not make direct contact with your
skins or eyes. If the electrolyte to uches your skins or splashes into your eyes,
immediately flush with clean water and consult a doctor.
• In case of battery deformation, color change, or overheating while charging or storing,
immediately stop using the device and remove the battery. Continued use may lead to
battery leakage, fire, or explosion.
• Do not put batteries in fire as they may explode. Damaged batteries may also explode.
• Dispose of used batteries in accordance with local regulations. Improper battery use may
lead to fire, explosion, or other hazards.
• Do not allow children or pets to bite or suck the battery. Doing so may result in damage
or explosion.
• Do not smash or pierce the battery,or expose it to highexternal pressure.Doing so may
lead to a short circuit or overheating.
• Do not drop the device or battery. If the device or battery is dropped, especially on a hard
surface, it may be damaged.
• If the device standby time shortens significantly, replace the battery.
Cleaning and maintenance
• Keep the device and acces sories dry.Do not attempt to dry it with an external heat
source, such as a microwave oven or hair dryer.
• Donot expose your device or accessories to extreme heat or cold. These environments may
interfere with proper function and may lead to fire or explosion.
• Avoid collision, which may lead to device malfunctions, overheating, fire, or explosion.
• Beforeyou clean or maintain the device, stop using it, stop all applications, and disconnect
all cables connected to it.
• Do not use any chemical detergent, powder,or other chemical agents (such as alcohol and
benzene) to clean the device oraccessories. These substances may cause damage to parts
orpresen tafire hazard.Useaclean,soft,and dry cloth to clean the device and
accessories.
• Donot place magneticstrip ecards,such as creditcards and device
cards,nearthedevicefor extended periods of time. Otherwise the magneticstripe
cards may be damaged.
• Do not dismantle or remanufacture the device and its accessories. This voids the warranty
and releases the manufacturer from liability for damage. In case of damage, contact an
authorized service center for assistance or repair.
• If the device screen
is
broken
in
a
collision, immediately
stop
using
the device. Do not touch or
attempttore move the brokenparts. Promptly contact anauthorized service
center.
•
Environmental protection
• The device and its accessories (if included), such as the power adapter, headset, and
battery should not be disposed of with household garbage.
• Disposal of the device and its accessories is subject to local regulations. Support
proper collection and recycling.
Safety precautions
• Use of wireless hands-freesystem(headdevice,headset) with alowpower Bluetooth emitter.
• Make sure the device has a low SAR.
• This advice applies especially to children, adolescents and pregnant women.
• Use device when the signal quality is good.
• People having active medical implants should prefer bly keep the cell devic eat least
15cm away from theimplant.
Disposal and recycling information
This symbol on the device or on its packaging indicates that the device
(including its electrical accessories) should not be disposed of as normal
household garbage. Do not dispose of your device as unsorted municipal
waste.Thedeviceshould behanded over toan authorized collectioncenter
for recycling or proper disposal at the end of its life.
Battery caution
1. Use only NUU-approved batteries, chargers, and cables to charge your device.
Unapproved chargers or cables can cause the battery to explode or damage the
device.
2. Use only NUU-approved batteries, chargers and cables. Use unapproved batteries,
chargers and cables may cause safety issue and the warranty will be lost.
3. You can recharge your battery many times, but all batteries have a limited lifespan. If you
notice a significant deterioration in your device’s battery life, you will need to purchase
a replacement battery for replacement. If the battery is built-in in the device, do not
attempt to remove built-in batteries and contact an authorized NUU service center
for a replacement.
4. Your device may becomewarm after prolonged use or when exposed to high ambient
temperatures. If your device becomes hot tothetouch, unplug the USB cable, disable
non-essential features, and avoid prolonged skin contact. Place your device in a cool
location and allow it to cool down to room temperature.
5. Charging times may vary depending on the ambient temperature and the remaining
battery level.
6. Avoid using your device when it is charging. Do not cover your device or the charger
when it is charging.
