ZTE Grand X Plus - Manual (Page 174)

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For this device, the highest reported SAR value for usage against
the head is 0.78 W/kg, for usage near the body is 1.23 W/kg.
While there may be differences between the SAR levels of
various phones and at various positions, they all meet the
government requirement.
SAR compliance for body-worn operation is based on a
separation distance of 15 mm between the unit and the human
body. Carry this device at least 15 mm away from your body to
ensure RF exposure level compliant or lower to the reported level.
To support body-worn operation, choose the belt clips or holsters,
which do not contain metallic components, to maintain a
separation of 15 mm between this device and your body.
RF exposure compliance with any body-worn accessory, which
contains metal, was not tested and certified, and using such
body-worn accessory should be avoided.
FCC Regulations
This device complies with part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) This device may not
cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause
undesired operation.
CAUTION:
Changes or modifications not expressly approved by the
manufacturer could void the user’s authority to operate the
equipment.