AT&T Maestro 3, Руководство пользователя

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Use only the supplied integral antenna . Use of unauthorized or modified
antennas may impair call quality and damage the phone, causing loss of
performance and SAR levels exceeding the recommended limits as well
as result in noncompliance with the local regulatory requirements in your
country .
To assure optimal phone performance and ensure human exposure to RF
energy is within the guidelines set forth in the relevant standards, always use
your device only in its normal-use position . Contact with the antenna area
may impair call quality and cause your device to operate at a higher power
level than needed .
Avoiding contact with the antenna area when the phone is IN USE optimizes
the antenna performance and the battery life .
Electrical safety
Accessories
• Use only approved accessories .
•
Do not connect with incompatible products or accessories .
• Take care not to touch or allow metal objects, such as coins or key rings, to
contact or short circuit the battery terminals .
Connection to a car
Seek professional advice when connecting a phone interface to the vehicle
electrical system .
Faulty and damaged products
• Do not attempt to disassemble the phone or its accessory .
•
Only qualified personnel may service or repair the phone or its accessories .