The world's third smartphone using a quad-core processor and the fourth phone in the LG Optimus Series comes with Android 4.0 Ice Cream Sandwich, 8.0MP camera and 48GB of total storage combined. If you think, you know everything this device, think , given these hidden tricks of the LG Optimus 4x HD.

1. Quick Settings Notifications

You can access this my pulling down the notifications bar, and it consists of toggles and shortcuts to certain functions such as Wi-Fi, Bluetooth, GPS and QuickMemo. To edit which shortcuts you can use to be on this list, swipe right till you see "edit." Additionally, you can hold press on the icons to go directly on their respective system menu.

2. Control Your Data Usage
Go to "Settings > Data Usage > Set mobile data limit." You can monitor how much data the device has consumed on 3G and 4G networks and set how many days should the device tracks the information. You can also restrict background applications to prevent them from connecting to the internet via mobile without your knowledge.

3. Call Rejection
If you do not want to be bothered by a call, go to "Settings > Call > Call Reject." Set the numbers you want to reject during a call and modify the reject list anytime.

4. Quiet Time
You can make the device quiet on certain hours during sleep, meeting, or privacy. Go to "Settings > Sounds > Quiet Time."This feature blocks notifications sounds from calls, SMS, MMS, default system notifications, and similar sounds except alarms and media.

5. Themes and Screen Effect
LG Optimus 4X HD has a default launcher that is very customisable, including themes and screen transitions. Go to "Settings > Home screen > Themes" and change to whatever pleases your eyes. For the screen transitions, select the "Screen Effect" menu and click any kind of effect you want for your home screen.

6. Gesture Controls
Go to "Settings > Gestures" and it will allow to activate or deactivate "flip gestures" for pausing a movie, silencing a ringtone during an incoming call or snoozing an alarm.

7. Power Saving Mode
LG Optimus 4x HD does not a third-party battery saving app to do the job. LG's version allows customisation of which functions you want to stop or when does the power saving mode kicks in. To know more about it, go to "Settings > Power Saver."

8. Video Speed Control with Live Zooming
Optimus 4x HD has a unique default movie player that can slow down or speed up the play speed. You can slow a video down by up to 0.5x speed or increase it up to 2x than the normal rate. Live Zooming works with this feature.

9. Time Catch Shot
This camera shot mode creates 5 multiple instant shot for you to select which is the best capture among them. You can also make your camera shots as icon images of an application icon you want.

10. Lock screen Personalisation
Go to "Settings > Lock screen" and change the screen lock type, wallpaper to display, and shortcuts. LG Optimus 4x HD can use widgets such as clock or calendar on the lock screen and add up to four application shortcuts of any apps you want.

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