1. Generally, non-repairable internal corrosion of parts results if you get the phone wet or
use wet hands to push the buttons. Consider a protective case. If the phone does get wet,
be sure it is totally dry before you switch it on so you can try to avoid damaging internal
parts.
2. Extreme heat in a car can damage the battery or the cell-phone electronics. Extreme cold
may cause a momentary loss of the screen display.
3. Analog cell phones suffer from a problem known as "cloning." A phone is "cloned"
when someone steals its ID numbers and is able to make fraudulent calls on the owner's
account. When your phone makes a call, it transmits the ESN and MIN to the network at
the beginning of the call. The MIN/ESN pair is a unique tag for your phone -- this is
how the phone company knows who to bill for the call. When your phone transmits its
MIN/ESN pair, it is possible for nefarious sorts to listen (with a scanner) and capture the
pair. With the right equipment, it is fairly easy to modify another phone so that it
contains your MIN/ESN pair, which allows the nefarious individual to make calls on
your account.
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