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Appendix
Operating Environment
• Do not use or charge the device in dusty, damp, and dirty
places or places with magnetic fields. Otherwise, it may result
in a malfunction of the circuit.
• The device complies with the RF specifications when the
device is used near your ear or at a distance of 1.5 cm from
your body. Ensure that the device accessories such as a
device case and a device holster are not composed of metal
components. Keep your device 1.5 cm away from your body to
meet the requirement earlier mentioned.
• On a stormy day with thunder, do not use your device when it
is being charged, to prevent any danger caused by lightning.
• When you are on a call, do not touch the antenna. Touching
the antenna affects the call quality and results in increase in
power consumption. As a result, the talk time and the standby
time are reduced.
• While using the device, observe the local laws and
regulations, and respect others' privacy and legal rights.
• Keep the ambient temperature between 0°C and 40°C while
the device is being charged. Keep the ambient temperature
between 0°C to 40°C for using the device powered by a
battery.