Small Children; Implanted Medical Devices - Microsoft Lumia 640 Dual SIM Quick Manual

Always keep the battery between 15°C and 25°C (59°F and 77°F) for
optimal performance. Extreme temperatures reduce the capacity and
lifetime of the battery. A device with a hot or cold battery may not work
temporarily.
Accidental short-circuiting can happen when a metallic object touches
the metal strips on the battery. This may damage the battery or the other
object.
Do not dispose of batteries in a fire as they may explode. Obey local
regulations. Recycle when possible. Do not dispose as household waste.
Do not dismantle, cut, crush, bend, puncture, or otherwise damage the
battery in any way. If a battery leaks, do not let liquid touch skin or eyes.
If this happens, immediately flush the affected areas with water, or seek
medical help. Do not modify, attempt to insert foreign objects into the
battery, or immerse or expose it to water or other liquids. Batteries may
explode if damaged.
Use the battery and charger for their intended purposes only. Improper
use, or use of unapproved or incompatible batteries or chargers may
present a risk of fire, explosion, or other hazard, and may invalidate any
approval or warranty. If you believe the battery or charger is damaged,
take it to a service centre before continuing to use it. Never use a
damaged battery or charger. Only use the charger indoors. Do not
charge your device during a lightning storm.

Small children

Your device and its accessories are not toys. They may contain small parts.
Keep them out of the reach of small children.
Medical devices
Operation of radio transmitting equipment, including wireless phones,
may interfere with inadequately shielded medical devices' function.
Consult a physician or the medical device's manufacturer to determine
if it is adequately shielded from external radio energy.

Implanted medical devices

To avoid potential interference, manufacturers of implanted medical
devices recommend a minimum separation of 15.3 centimetres (6 inches)
between a wireless device and the medical device. Persons who have
such devices should:
• Always keep the wireless device more than 15.3 centimetres (6 inches)
from the medical device.
• Not carry the wireless device in a breast pocket.
• Hold the wireless device to the ear opposite the medical device.
• Switch the wireless device off if there is any reason to suspect that
interference is taking place.
• Follow the manufacturer directions for the implanted medical device.
If you have any questions about using your wireless device with an
implanted medical device, consult your health care provider.