You just reset it. type in Google (not google.com) and there will be a link to the google homepage, drag it to the home button----if you dont want google to be your homepage do the same thing to the one you want it to be.
You usually do Lock Button + Home button for Samsung devices making sure you click the lock button first or you'll end up at the home screen :)
hold first home button and than power button
hold the "home" button and the "lock" button at the same time and release it.
Hold down the sleep button on top then press the home button.
Hold down the back button while pressing the home button two times.
Simultaneously press and HOLD the Power button and the Home button, until it makes a snapshot sound.
Press and Hold the Home button and press the power button.. Note: Do not press and hold home button for Long time, or else you will get task manager option..
Hold the power Button.and the home button at the same time
By downloading an app or try the lock button along with the home button maybe you'll have to get your phone rooted.
For an iphone click the home button and the lock button that is to reboot it if it doesnt reboot then it probably broken
forgot my password for samsung p2 mp3 player
If you're using a Samsung or apple phone, press down the home button and off button quickly for about one second. This is just the same as scrernshotting anything, really. Hope this helps.