Sony xperia go ST27i ST27a hard reset in 2014

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.

Press and hold  volume up key+ power button together until phone restart.

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 st27a phone

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

underway.

If this does not solve the problem, perform a factory data reset. In Idle mode, open the application list and select Settings → Privacy → Factory data reset → Reset phone → Erase everything.

Clear storage : Erase the credential contents from the device and reset the password

Set an unlock pattern

Once you set a screen lock, your device will require an unlock code each time you turn it on or unlock the touch screen

Settings → Location and security → Set screen lock → Pattern

If you forget your PIN or password, bring your device to a Service Centre to reset it.

Set an unlock PIN code

Settings → Location and security → Set screen lock → PIN

Set an unlock password Sony Xperia go,

Settings → Location and security → Set screen lock → Password.