The power button is on top of the iPhone 4. You hold down the button to either turn the phone on or off.
What you do is you go and plug up ur iPhone to the iTunes and click on the update button
The easiest way someone can find an instruction to install a home button is using Youtube. There are other websites like Ifixit which explain installing a home button on the iPhone 4.
There is a Commcenter patch for iOS 5+ available for the iPhone 5, iPhone 4S and iPhone 4. This makes it possible for the user to edit the carrier.plist.
to delete a single text withing a string of text messages click the "edit" button in the string and select and delete
You should go to Apple store. They will repair it, if they couldn't repair, they will replace your phone with new iphone 4.
On the side above the volume up button there is a switch flip it
no but they are sold at yo mamas belly button
Depending on what iOS you have it varies, if both iPhone 4 and 3GS had iOS5 the only difference would be not having the switch camera button in the Camera App and FaceTime.
Universal Edit Button was created on 2008-06-19.
There is an inbuilt editing tool which allows you to edit the length of the video but for the best editing you would need to download iMovie from the app store and use that to edit and add stuff to your videos.
The side buttons are used to turn the volume up and down