Zte U.S. Cellular Home Phone Quick Start Manual page 17

Does 911 work on this device?
Yes, the Home Phone device is Enhanced 911 (E911) compatible.
Because the device is intended for indoor use only, please be
prepared to provide your location inside the premises to public service
personnel when you call 911. The GPS chipset embedded in the Home
Phone device will work best if the device is located near a window or
other exterior opening.
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Can I use my U.S. Cellular Home Phone internationally?
No. Use is limited to the United States, Puerto Rico, U.S. Virgin Islands,
Guam, and Northern Mariana Islands.
Does this product work during a power outage?
While the Home Phone device has an internal backup battery for use
during power outages, if the telephone connected to the device
requires external power to operate, service (including the ability to
make and receive 911 calls) will not be available during a power
outage.
Service will only be available during a power outage if the telephone
connected to the device does not rely on external power to operate (as
is the case with many corded phones).
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