Sony ST27A User Manual

Troubleshooting

My phone is not working as expected

If you experience problems with your phone, check these tips before you try anything

else:

•

Restart your phone.

•

Remove and re-insert the SIM card. Then restart your phone.

•

Force a restart of the phone if the phone hangs and can't be restarted normally.

•

Update your phone. Updating your phone ensures optimal performance and provides

the latest enhancements. See Updating your phone on page 126 for more

information.

•

Reset your phone.

Be patient while resetting your phone. Restarting the phone during a reset procedure may

damage the phone permanently.

To force the phone to restart

1

Press and hold down both the volume up key and the power key   for five
seconds.

2

After your phone vibrates once, release the keys. The phone restarts

automatically.

To force the phone to shut down

1

Press and hold down both the volume up key and the power key   for 10
seconds.

2

After your phone vibrates three times, release the keys. The phone turns off

automatically.

Resetting the phone

You can reset your phone to its original settings, with or without deleting all of your

personal data. It is possible to reset the phone to the state it was in before you first

turned it on. But before you perform a reset, make sure to back up any important

data saved on your phone.

To reset the phone

To avoid permanent phone damage, do not restart the phone while a reset procedure is

underway.

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