LG US730 - Manual (Page 13)

Getting to know your phone 13
5. Press the Power/Lock Key
and your phone will be restored
to the factory settings. To cancel,
press any other key.
Leave your phone for at least a minute
while the hard reset is carried out. Your
phone will reboot automatically.
Caution
If you perform a hard reset, all user
applications and user data will be deleted.
This cannot be reversed. Remember
to back up any important data before
performing a hard reset.
6. Opening and switching
applications
Multitasking is easy with Android
because you can keep more than one
application running at the same time.
There's no need to quit an application
before opening another. Use and switch
between several open applications.
Android manages each application,
stopping and starting them as needed
to ensure that idle applications don't
consume resources unnecessarily.