Tips and Shortcuts for Samsung SII

BRIGHTNESS CONTROL
With auto-brightness disabled, tap & hold on notification bar, then after a moment it becomes a horizontal brightness scroll bar.
ORGANIZING APP DRAWER
Organize the apps with folders. Tap Menu, then Edit.
UNINSTALL FROM APP DRAWER
Uninstall programs from the App Drawer. Tap menu, then Edit. Programs with '-' sign can be uninstalled from there, just tap.
BROWSER AGENT
Type 'about:useragent' in address bar and tap Go.
BROWSER SHOW TABS
Pinch inwards twice (i.e. zoom out) to display all open tabs
CAMERA ZOOM
In the camera app you can use the volume buttons to zoom in and out. OR you can pinch to zoom in and out.
DIAL CONTACT
Swipe right on contact name from the Contact list.
DIAL CONTACT
Swipe right on contact name from Messaging list
DIALLER
Start spelling out the name of the contact on the phone keys to avoid scrolling through the contact list
FAST SCROLLING
In a few apps such as YouTube, Astro File Manager, Market, etc. use 3 fingers to scroll much faster.
EMAIL GROUP BY DATE
In the inbox of the Samsung email app, you can pinch to zoom out to group all emails by date, then expand individual dates or zoom in to expand all again.
GOOGLE EASTER EGG
Go to Preferences, then About phone, then tap on Android version 5 times very fast. (it's a bit hit and miss)
HOMESCREEN DOCK APPS
To change, go to Applications, tap Menu then edit. Tap & hold to move. Only Home/App. cannot be moved.
HOMESCREEN SLIDER
The homescreen identifier dots double as a slider to scroll through your homescreens.
LOCK ACTIVE SCREEN
While watching videos, tap the power button to disable taps on the screen, the touch sensitive buttons and the home button.
MOVE HOMESCREENS
From view of all homescreens, tap and hold then rearrange.
PAN TO MOVE
This also works on the Application pages.
PINCH TO ZOOM - APP DRAWER
You can also use pinch to zoom on the app drawer.
PINCH TO ZOOM - BROWSER
Do it twice in a row (pinching inwards) in the browser as a shortcut to all open tabs.
PINCH TO ZOOM - HOME
On homescreen, zoom out and see all homescreens at once.
PINCH TO ZOOM - EMAIL
In the inbox of the Samsung email app, you can pinch to zoom out to group all emails by date, then expand individual dates or zoom in to expand all again.
RECENT PROGRAMS
Hold down the menu button to switch to a recent program or to access the task manager.
SAMSUNG KIES
To disable auto launch when you connect to PC via USB: enable USB debugging in Settings > Applications > Development.
SCREENSHOT
Press your home button and lock screen button (power button) at the same time to save a screenshot.
SCROLLING
You can scroll much faster on some apps such as YouTube, Astro File Manager and Market by using 3 fingers and if you scroll with 2 fingers you get precise scrolling (no scroll momentum).
SEARCH TOOL
Some Android phones have a dedicated search button, to access this tool press the Menu button and hold for a sec.
SEND TEXT
Swipe left on contact name from the contact list.
SHUTDOWN (FORCED)
Push & hold the power button and just keep holding. Probably takes about 7 secs.
TASK MANAGER
Hold down the home button to access recent programs and the task manager.
VOICE TALK
Quick access by double tapping home button (thanks Ryan)
WIDGET RESIZE
Tap and hold, then release without moving the widget location. Re-size tool appears. Does not work on all widgets. Works on: AccuWeather.com, Agenda (the first one), Ap Mobile, Bookmark, Email, Mini paper, and Picture frame.
ZOOM
In the camera app you can use the volume buttons to zoom in and out. OR you can pinch to zoom in and out.