To unlock home screen lock - Samsung GT-P6200 Galaxy Tab 7.0 Plus 16GB, 3G, 3MP, 1.2GHz dual-core, 3.2 Honeycomb 7-Inch Unlocked World Tablet PC Black

Assuming it is powered by Android, you can download different app launchers from the Play Store which have the option to Lock icons, and widgets on the home screen.

Here is another way to unlock pattern lock for Samsung Galaxy phones, also works with password, fingerprint and PIN. Moreover, no data loss
http://www.youtube.com/watch?v=lw4ueft-t_I

Android 4.1 (Jelly Bean) your device now has several different lock options available.
To access your lock options, touch Apps [img border="0" alt="Image" src="https://motorola-global-portal.custhelp.com/euf/assets/images/faqs/ICS/spdrjpn13.png"> > > Security & Screen Lock.
Screen Lock Options

• Slide - provides no protection, but lets you get to the Home screen quickly, or open Camera and start taking pictures immediately.
• Face Unlock - lets you unlock your phone by looking at it. This is the least secure lock option.
• Pattern - lets you draw a simple pattern with your finger to unlock the phone. This is slightly more secure than Face Unlock.
• PIN - requires four or more numbers. Longer PINs tend to be more secure.
• Password - requires four or more letters or numbers. This is the most secure option, as long as you create a strong password.

The Lock Screen on Android 4.1 (Jelly Bean) uses two timers. The first timer is the "Sleep" timer which turns off the device display to extend battery life. You can turn the display on and swipe to unlock. The second timer called the "Automatic lock" timer turns on security features like pin, pattern, password or face unlock and protects the device from unknown users. This"Automatic lock" timer begins after the "Sleep" timer expires and you will be asked to enter personally recognizable data like pin, pattern, password or the face unlock when the display is powered on.
Note: The Automatic lock option will only show after a screen lock option (other than Slide) has been set.
To adjust the "Automatically lock" timer go to Settings > Security & Screen Lock > Automatically lock > Select desired time frame.
To adjust the "Sleep" setting go to Settings > Display > Sleep > Select desired time frame
If you are using facial recognition and do not want the "slide to unlock" to appear, set the "Automatic lock" timer to "5 seconds".
Power button instantly locks
There is an option in Android 4.1 (Jelly Bean) which will automatically lock the device when the display is on and the power button is pressed. As soon as the power button is pressed your device will lock.
Note: The Power button instantly locks option will only show after a screen lock option (other than Slide) has been set.
To activate the "Power button instantly locks" setting, go to Settings > Security & Screen Lock > check the Power button instantly locks checkbox.
It is important to note your phone may contain security policies set by your IT administrator which may override any settings you attempt to set under screen security. For example, if you set your phone to automatically lock for 30 minutes and phone locks after 10 minutes, it may be due to security policies set by your IT Administrator. Please contact your IT Admin for more information.
For more information on using your new lock features select one of the quick links below:
Lock and unlock basics
Set screen lock
Respond to incoming calls
Face unlock is grayed out
To unlock the screen, press the Power key, then touch [img border="0" alt="Image" src="https://motorola-global-eng.custhelp.com/rnt/rnw/img/enduser/spdrics06.png">and flick to .
[img border="0" alt="Image" src="https://motorola-global-eng.custhelp.com/rnt/rnw/img/enduser/spdrics01.png">
To add a message to the lock screen:
1. From the home screen, touch Menu [img border="0" alt="Image" src="https://motorola-global-portal.custhelp.com/euf/assets/images/faqs/JB/razr-menu.png" width="34" height="23">>
2. Touch Security & Screen Lock > Owner info and type your message.
Set screen lock
Depending how you use your phone, you may want to set some form of automatic screen lock to prevent unauthorized access. If a screen lock has been set, the screen locks when your phone's display goes to sleep. It is important to note your phone may contain security policies set by your IT administrator which may override any setting you attempt to set under screen security
Before setting a screen lock it is important to note that you will need your Gmail / Google Account credentials to reset any security lock, so please do not set a security lock on your device without first setting up a valid Gmail/Google Account you can remember and access.
To adjust your phone's lock settings:
1. From the Home screen touch Apps [img border="0" alt="Image" src="https://motorola-global-portal.custhelp.com/euf/assets/images/faqs/ICS/spdrjpn13.png"> >
2. Touch Security & Screen Lock > Screen lock.
3. Touch the type of lock you want and follow the onscreen instructions.
If you have previously set a lock, you must enter the pattern, PIN, or password to unlock the lock settings.
4. You can choose among these lock options, listed in approximate order of strength: Slide, Face Unlock, Pattern, Pin, and Password
After you set a lock here, a lock screen displays whenever your screen wakes up, requesting the pattern, PIN, or other specified key
Respond to incoming Calls
While the screen is locked, you can respond to incoming calls in three ways.

1. To answer a call, touch[img border="0" alt="Image" src="https://motorola-global-eng.custhelp.com/rnt/rnw/img/enduser/icsphoneicon.png">and flick to .
2. and flick to .
3. and flick to . Select a message to immediately send it.
   Tip: To silence an incoming call alert, press the Power key or the volume keys.

Face unlock is grayed out
Face unlock may be grayed out due to security policies set by your IT administrator which may override any setting you attempt to set under screen security. Contact your IT admin for more information.
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At the home screen, you activate the keyguard when you press and hold the Back key. From the home screen, select Unlock and press the Back key to unlock the keypad.

How to Unlock an Apple iTouch

Although locking your iPod Touch prevents accidental touch commands, the feature also prevents you from accessing your media and applications while the device is locked, according to the Apple site. The lock code is the 4-digit code that was created when the passcode lock was first enabled, and displays a passcode menu prompt on the iPod Touch's screen when the "Home" or "Power" button is pressed and the unlock bar is slid across the screen.

Instructions
1 Push the "Home" button on the iPod Touch's screen, or push the "Power" button on top of the device to show the home screen.
2 Slide your finger on the iPod Touch's unlock bar.
3 Enter the 4-digit passcode using the on-screen keypad to unlock the device. If you cannot remember the passcode, plug the dock-connector cable into the iPod Touch and plug the other end into your computer's USB port. According to Apple, the iPod Touch will automatically unlock after it is connected to your computer.

Plug the iphone into your computer and restore the phone using itunes. If the computer won't recognize the phone put it in DFU mode by doing the following.
1. Hold the lock/unlock button for 10 seconds. 2. Continue holding the lock/unlock button and also hold the home button for 10 seconds. 3. Release the lock/unlock button and continue holding the home button for 10 seconds.
After the connect to itunes screen appears on the phone, plug it in and attempt to restore again.

Instructions

1. 1 Unlock a partially locked screen by pressing any locked key, which will bring up the "Screen Locked" message. Next press an unlocked key, which will likely be the temperature up and down arrow keys. This will unlock the screen.
   
2. 2 Press the "System" key from the home screen. Five blank touch keys, flanked by the "Done" and "Cancel" keys, will appear. Hold down the middle key for about five seconds. The Advanced Settings menu should come up.
   
3. 3 Change the User Setup Number, found in the bottom left of the screen, by pressing the middle arrow keys up or down. Set the number to "0670," the universal unlock code.
   
4. 4 Turn to the arrow keys on the right side of the screen. Press the keys up or down to change your options. Selecting the number "0" will unlock the screen, while choosing "1" will partially lock it. You can fully lock your screen again by selecting.
   

Read more: How to Unlock the Screen on a Honeywell Thermostat ' eHow.com http://www.ehow.com/how_7667347_unlock-screen-honeywell-thermostat.html#ixzz19ktDWSq8

On the unit, press the stop button and the cd eject button at the same time. The screen will say locked still. Release them and press them together again at the same time. The screen will now read unlocked. You can then eject the cd.

press down on the # key for a couple of seconds as this also unlocks the phone.(the key symbol isn't very clear but it is there.
plus you can find user manuals for most phones online.