150
Problem
Possible causes
Possible solution
Cannot turn
your phone
on
Battery power has been
depleted.
Recharge the phone’s
battery.
(U)SIM card
error
(U)SIM card malfunction
or damage.
Take the (U)SIM card to
your service provider for
testing.
(U)SIM card inserted
improperly.
Insert the (U)SIM card
properly.
Debris on the (U)SIM
card contacts.
Use a soft, dry cloth to
clean the (U)SIM card
contacts.
Unable to
connect to
the network
(U)SIM card invalid.
Contact your service
provider.
You are not within the
network’s service area.
Check the service area
with your service
provider.
Poor signal.
Move to an open space,
or if you are inside a
building, move closer to
a window.
Summary of Contents for Whirl Z660G
Page 1: ...1 Z660G WCDMA GSM GPRS Dual Mode Digital Mobile Phone User Manual ...
Page 12: ...12 Getting Started Getting to Know Your Phone ...
Page 15: ...15 2 Hold the SIM card with the cut corner oriented as shown and slip it into the card holder ...
Page 70: ...70 The contact information is separated into individual contacts in the list of contacts ...
Page 131: ...131 rename delete tag it check its file information or set it as your phone ringtone ...