iPhone - Battery Life

I just upgraded to an iPhone and I noticed that my battery had to be charged almost every day.  My old phone could last up to a week without a charge.  I went searching for ways to prolong my battery life.  The two most important:

Turn off the Wi-Fi

• Choose Settings, Wi-Fi and then off

Turn all apps off

• Double tap the menu button
• All open apps will appear
• Press an app and you will see a "minus" sign in the top left hand corner
• I turned off all apps except for my phone

My battery is now lasting much longer!