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#10 You can replace your unlock screen with a customized version
Not only can you customize or completely change your launcher and customize or completely change your home screen widgets, you can also completely customize your lock screen. Since your lock screen is the very first at-a-glance use of your phone when you pick it up, being able to customize the lock screen is a key to truly maximizing the productivity of your phone.
In this example, I'm showing an image from a $3 program called WidgetLocker. I've got this installed on my phone (although my lock screen doesn't look this cool yet), and what's nice is that not only do you get this screen, but you still get all the lock password security you expect.
Image courtesy TeslaCoil Software and WidgetLocker.
#11 It's a frickin' tricorder
You can download a free app called WeatherSignal that provides measurements including temperature, light, humidity, pressure, acceleration, and even magnetic flux (measured in microteslas).
While there's some useful information to be gained by all these sensor readings, one thing I learned is that there's one heck of a lot of magnetic flux within a few feet of my big server. It's a good thing I don't sit in front of it all day. Fortunately, the Inverse Square Law applies, so my desk (which is about six feet away) has almost no measurable flux (unless, of course, I exceed 88 miles per hour).
Once again, the iPhone can't do this.
Image courtesy my phone and the WeatherSignal app.
#12 It supports near field communications (NFC)
NFC was supposed to be the gateway drug to easier credit card payments, but this hasn't happened yet. The carriers are getting in the way (as usual) and some users claim Verizon has disabled Google Wallet.
Even so, you can use NFC for some hacky activities, like triggering Tasker events (more about Tasker later) when placing your phone down on NFC stickers like these made by AndyTags (who explains NFC quite well). There are also a few substitute passbook apps, like the one from Attidomobile pictured above.
While NFC might well be a technology in search of a solution, my Android phone has it and my iPhone didn't.Image courtesy Attido Mobile.