you have to reset your phone in order to fix that..but you have to save all your important data before you do the reset...here is how..
a soft reset is similar to restarting a computer. If your Centro device
is not responding or you're having trouble synchronizing with your
computer, a soft reset may
help. All your information is
retained when you perform a soft reset.
the battery from your device, and then reinsert it. Note:
The reset begins when you insert the battery and ends when theDate & Time Preferences
2. Select Done
Replacing the Battery
Centro device comes with a replaceable battery. Be sure to use a
battery that is approved by Sprint and that is compatible with your
device. Failure to use the proper
battery may result in personal injury or product damage, and it voids your device warranty.
1. Press Power/End
to turn off the screen.
2. Gently press down on the Battery Door, and then slide the door downward to remove it from your device.
Place a finger in the notch next to the battery and lift the battery up
at a 45-degree angle to remove it from the compartment.
4. Align the metal contacts on the new battery with the contacts inside the battery compartment.
Insert the new battery into the compartment at a 45-degree angle,
pressing it into place. Slide the battery door onto the back of the
device until it clicks into place.
6. Connect your device to the charger or sync cable.
7. Wait for your device to turn on, and then enable the network time or set the date and time when prompted.
system reset, also called a safe or warm reset, can be useful if your
device loops or freezes during a soft reset. Performing a system reset
allows you to get out of the loop and restores limited functionality to
your device in order to uninstall a third-party application that's
causing the problem. Note that after a system reset, you must perform a
soft reset to restore full functionality, including the wireless
features, to your device.
1. Remove the battery from your device.
2. Press and hold Up
on the 5-way
while reinserting the battery.
3. When Date & Time Preferences
appears, release Up
4. Delete the third-party application that you suspect is causing the problem.
5. Perform a soft reset. (The wireless features of your device are not available until you complete this step.)ard Reset
A hard reset erases all information and third-party software on your Centro device. Never perform a hard reset without first trying a soft reset and a system reset.
You can restore previously synchronized information the next time you synchronize.
hard reset can tell you if a problem stems from your Centro device or
from an application installed on it. If you do not experience the
problem after you perform a hard reset, the problem is related to
software you installed.Important:
If you set a password on your device, performing a hard reset reformats
your device (the message "Reformatting in progress" is displayed). This
is a more severe form of a hard reset, which removes all your
information and restores your formats, preferences, and other settings
to the factory default settings.Note:
Some third-party applications do not create a backup on your computer
when you synchronize. If you perform a hard reset, you may lose data in
these applications and you need to reinstall these applications after
the hard reset. Please contact the developer to find out which
information is backed up during synchronization.
i hope it will help you..thanks for trusting fixya