Turn
the device off and back on. Most service issues are due to old,
timed-out registrations that have dropped you from the network. By
power-cycling the phone, a new registration is acquired and signal
should be restored.
Perform a Master Reset. If power-cycling did not restore your
service, the problem may be due to a software issue. Doing a master
reset will revert the software back to factory standards, restoring your
service by removing bugs that may have developed over time. Generally
this is done by pressing "Menu," "Settings," "Initial Setup" and "Master
Reset." However, steps may vary from device to device so refer to your
user manual for different steps if needed.
Perform a Master Clear. If the master reset did not restore your service, the software issue at work
may be severe. In this case, it is necessary to completely wipe all
information from the device and install a fresh copy of the operating
system using the Master Clear function. Press "Menu," "Settings,"
"Initial Setup" and "Master Clear." Again, steps may differ from phone
to phone, so consult your user manual as needed.
If the software resets did not restore your service, it's
possible that the cellular radio has ceased functioning correctly.
Contact your carrier for repair, replacement or exchange if it is still
under warranty. Your carrier can advise you of the options you may
have.
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