Potentially Explosive Environments; Certification Information (Sar) - Microsoft Lumia 640 Dual SIM Quick Manual

possible. Suspend calls in heavy traffic or hazardous weather. Get to know
your cellular phone and its features and make any necessary information
inputs prior to driving. Do not input data or engage in text messaging
while driving. Cellular telephones should not be used when use may be
a distraction to the driver.
The Cellular Telecommunications & Internet Association (CTIA) has
published further info and tips on safe use of cellular telephones at
www.ctia.org/consumer_info/safety, which we encourage you to
review.

Potentially explosive environments

Switch your device off in potentially explosive environments, such as near
petrol pumps. Sparks may cause an explosion or fire resulting in injury
or death. Note restrictions in areas with fuel; chemical plants; or where
blasting operations are in progress. Areas with a potentially explosive
environment may not be clearly marked. These usually are areas where
you are advised to switch your engine off, below deck on boats, chemical
transfer or storage facilities, and where the air contains chemicals or
particles. Check with the manufacturers of vehicles using liquefied
petroleum gas (such as propane or butane) if this device can be safely
used in their vicinity.

Certification information (SAR)

This mobile device meets international guidelines for exposure to
radio waves.
Your mobile device is a radio transmitter and receiver. It is designed not
to exceed the limits for exposure to radio waves (radio frequency
electromagnetic fields), recommended by international guidelines from
the independent scientific organization ICNIRP. These guidelines
incorporate substantial safety margins that are intended to assure the
protection of all persons regardless of age and health.
The exposure guidelines are based on the Specific Absorption Rate (SAR),
which is an expression of the amount of radio frequency (RF) power
deposited in the head or body when the device is transmitting. The
ICNIRP SAR limit for mobile devices is 2.0 W/kg averaged over 10 grams
of tissue.
SAR tests are carried out with the device in standard operating positions,
transmitting at its highest certified power level, in all its frequency bands.
The maximum recorded SAR values for this device are:
Maximum SAR value
When held against 0.88 W/kg over 10g
the head
Frequency bands
used when Maximum
SAR value was
recorded
GSM850 +
WLAN2450