Samsung sgh-i727r User Manual page 18

Safe Mode
You can boot your phone into Safe Mode if you wish to
troubleshoot whether or not added applications are causing
problems with the device. Safe mode will only load basic system
software.
Make sure your phone is turned off.
1.
Press and hold the power key (
2.
device.
After the start-up animation starts to display, continually tap
3.
the key until the backlight turns on behind the four
bottom keys.
Press and hold the
4.
When the Home screen is displayed, Safe mode is displayed
in the lower left corner of the screen.
8
) to boot up your
key.