150
Problem
Possible causes
Possible solution
Cannot turn
your phone
on
Battery power has been
depleted.
Recharge the phone’s
battery.
micro-UIM
card error
micro-UIM card
malfunction or damage
Take the micro-UIM card
to your service provider
for testing.
micro-UIM card inserted
improperly
Insert the micro-UIM
card properly.
Debris on the micro-UIM
card contacts
Use a soft, dry cloth to
clean the micro-UIM
card contacts.
Unable to
connect to
the network
The micro-UIM card is
invalid.
Contact your service
provider.
You are not within the
network’s service area.
Check the service area
with your service
provider.
The signal is poor.
Move to an open space,
or if you are inside a
building, move closer to
a window.
Summary of Contents for Z819L
Page 1: ...1 Z819L User Manual ...
Page 11: ...11 Radio Frequency Interference 165 Explosive Environments 166 Specifications 168 ...
Page 13: ...13 Back Cover Speaker Charging micro USB Jack Headset Jack Back Camera Flash Power Key ...
Page 85: ...85 separate 3 Touch Separate 4 Touch OK to confirm ...
Page 145: ...145 About Phone View important phone information and legal information ...