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Operating environment
• Avoid dusty, damp, or dirty environments. Avoid magnetic fields. Using the device in these
environments may result in circuit malfunctions. Do not use your device during thunderstorms
to protect your device against any danger caused by lightning.
• Ideal operating temperatures are 0 °C to 35 °C. Ideal storage temperatures are -20 °C to
45 °C. Extreme heat or cold may damage your device or accessories.
• Do not expose your device to direct sunlight (such as on a car dashboard) for prolonged
periods.
• To protect your device or accessories from fire or electrical shock hazards, avoid rain and
moisture.
• Keep the device away from sources of heat and fire, such as a heater, microwave oven, stove,
water heater, radiator, or candle.
• Do not place sharp metal objects, such as pins, near the earpiece or speaker. The earpiece
may attract these objects and result in injury.
• Stop using your device or applications for a while if the device is overheated. If skin is exposed
to an overheated device for an extended period, low temperature burn symptoms, such as
red spots and darker pigmentation, may occur.
• Do not use your device’s camera flash directly in the eyes of people or pets. Otherwise
temporary loss of vision or damage to the eyes may occur.
• Do not touch the device’s antenna. Otherwise, communication quality may be reduced.
• Do not allow children or pets to bite or suck the device or accessories. Doing so may result
in damage or explosion.
• Observe local laws and regulations, and respect the privacy and legal rights of others.
Child’s safety
• Comply with all precautions with regard to child’s safety. Letting children play with the device
or its accessories may be dangerous. The device includes detachable parts that may present
a choking hazard. Keep away from children.
• The device and its accessories are not intended for use by children. Children should only use
the device with adult supervision.
Accessories
• Using an unapproved or incompatible power adapter, charger or battery may cause fire,
explosion or other hazards.
• Choose only accessories approved for use with this model by the device manufacturer. The
use of any other types of accessories may void the warranty, may violate local regulations and
laws, and may be dangerous.
• If the power cable is damaged (for example, the cord is exposed or broken), or the plug
loosens, stop using it at once. Continued use may lead to electric shocks, short circuits,
or fire.
• Do not touch the power cord with wet hands or pull the power cord to disconnect the
charger.
• Do not touch the device or the charger with wet hands. Doing so may lead to short circuits,
malfunctions, or electric shocks.
• If your charger has been exposed to water, other liquids, or excessive moisture, only an
authorized service center has the right to inspect.
Battery safety
• Do not connect battery poles with conductors, such as keys, jewelry, or other metal materials.
Doing so may short-circuit the battery and cause injuries or burns.
• Keep the battery away from excessive heat and direct sunlight. 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 that the electrolyte does not make direct contact with your skins or
eyes. If the electrolyte touches 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 high external 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 accessories dry. Do not attempt to dry it with an external heat source,
such as a microwave oven or hair dryer.
• Do not 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.
• Before you 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
or present a fire hazard. Use a clean, soft, and dry cloth to clean the device and accessories.
• Do not place magnetic stripe cards, such as credit cards and phone cards, near the device for
extended periods of time. Otherwise the magnetic stripe 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.