Symptom
Check item
Cell phone
operation is
unstable
• It may be caused by
applications installed to the
cell phone after purchase.
If problems improve when
you start in Safe mode (a
function to activate the cell
phone in a mode similar to
default), problems may be
improved by uninstalling
the application.
– How to activate Safe
Mode
1. While in the power
OFF status, press and
hold the power key for
over two seconds.
2. After the mobile
operator logo appears,
press and hold the
volume key (down)
until the Home screen
appears.
Symptom
Check item
Cell phone
operation is
unstable
* Press the power key
for over two seconds
with the power turned
on
u
Touch and hold
down "Power off"
u
"OK" to activate.
* When Safe mode
starts, "Safe mode"
appears on the bottom
left of the screen.
* To stop Safe mode,
turn the power OFF
once and restart it.
– Before starting Safe
mode, backup necessary
data.
– Widgets that you have
created may be gone.
– Safe mode is not the
normal starting condition,
so stop Safe mode before
normal usage.
224
Appendix/Index