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Improper battery use may lead to fire, explosion, or other
hazards.
Dispose of used batteries in accordance with local regulations.
Do not smash or pierce the battery, or expose it to high external
pressure. Doing so may lead to a short circuit or overheating.
If the device standby and talk time shortens significantly, replace
the battery.
Operating environment
Avoid dusty, damp, or dirty environments. Avoid magnetic fields.
Using or charging your 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.
Observe local laws and regulations, and respect the privacy and
legal rights of others.
Avoid touching the antenna when you are on a call. Touching the
antenna affects call quality, increases power consumption, and
reduces talk and standby time.
Ideal operating temperatures are 0°C to 40°C. Ideal storage
temperatures are 0°C to 40°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.
Do not place your device or batteries on or in heating devices,
such as microwave ovens, stoves, water heaters, or radiators.
Batteries may explode if overheated.
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.
