Opening And Switching Applications - LG Optimus L9 Benutzerhandbuch

Important notice
5. Using Hard Reset (Factory Reset)
If your phone needs to be restored to its original condition, use a Hard Reset to
initialize your phone.
1 Turn the power off.
2 Press and hold the following keys at the same time for 10 seconds: Power/Lock
Key + Down Volume Key + Home Key.
3
The phone will turn on and perform a factory reset immediately.
WARNING
If you perform a Hard Reset, all user applications and user data will be
deleted. Please remember to back up any important data before performing
a Hard Reset.

6. Opening and switching applications

Multi-tasking is easy with Android because you can keep more than one application
running at the same time. There is no need to quit an application before opening
another one. 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.
To stop applications:
1 > Apps tab > Settings > Apps from DEVICE > Running.
Touch
2 Scroll and touch the desired application and touch Stop to stop it.
NOTE: For multitasking, press Home
using an app. This does not stop the previous app running in the background
on the device. Make sure to touch the Back
it.
16
key to move to another app while
key to exit an app after using