Kyocera 2100 Series - Manual (Page 8)

Additional information on Specific Absorption Rates (SAR) can be found on
the Cellular Telecommunications Industry Association (CTIA) web-site at
http://www.wow-com.com .
Caution
The user is cautioned that changes or modifications not expressly approved
by the party responsible for compliance could void the warranty and user’s
authority to operate the equipment.
Warning
Use only Kyocera approved accessories with Kyocera phones. Use of any
unauthorized accessories may be dangerous and will invalidate the phone
warranty if said accessories cause damage or a defect to the phone.
Optimize your phone’s performance
Use the guidelines on pages 1 and 22 to learn how to optimize the
performance and life of your phone, antenna, and battery.