Blackberry BOLD 9780 - SAFETY AND PRODUCT INFORMATION REV2 Product Information page 22

your BlackBerry device to exceed radio frequency (RF) exposure guidelines.
For more information about radio frequency exposure, see the "Compliance
information" section of this guide.
Carrying solutions: Most BlackBerry carrying solutions for BlackBerry devices,
for example holsters, totes, and pouches, incorporate a magnet into the
physical structure of the carrying solution. Do not place items containing
magnetic strip components such as debit cards, credit cards, hotel key cards,
phone cards, or similar items near BlackBerry carrying solutions which
incorporate a magnet into the physical structure of the carrying solution as
the magnet might damage or erase the data stored on the magnetic strip.
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