Motorola FX-850P User Manual page 10

Note: The battery pack is a backup for emergencies in case of a power failure.
Do not operate the phone without having the AC/DC adaptor connected. Be
sure to carefully match the positive and negative terminals as shown on the
battery.
Caution:

It is prohibited to use the SIM card for this Fixed Wireless Phone in other GSM
phone. Once the SIM pin number is entered, the SIM pin is automatically
changed so the initial PIN is no longer valid. Therefore, it is highly recommended
NOT to take out the SIM card once it is installed in this product.

DO NOT bend or scratch your SIM card, and avoid exposing it to static electricity,
water, or dirt.
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