If you make the most of your smartphone, it can make you look smart when you least expect it. Hopefully, you are using your fancy phone for more than sending e-mails and making phone calls.
If you are not, here are some of the apps that I recommend.
View your files on the go with Dropbox
Notably, this app is only useful if you store all of your files in Dropbox. The app itself is pretty awesome and is available for both iPhone and Android users.
The mobile app can view PDF and MS Word files (sadly, not Open Office). This comes in handy more than you think. I tend to forget what courtroom I am going to. Whenever that happens, I just pull up the pleading PDF and end up in the right place. It is also useful for pulling up files when meeting with clients outside of the office.
I also like the added security of the Dropbox app. You can require a password to access the app. Even better, you can have Dropbox erase all data after 10 failed attempts. These are great secondary security features for a smartphone.
Use Tasker to look smart
Tasker is only for Android sadly, but hopefully someone will develop something similar for the iPhone. Tasker lets you program your phone to do all sorts of stuff based on location or orientation.
For example, when you are in the courthouse (and your GPS is on), Tasker will automatically turn off your ringer. Or, when you stick your phone in a vertical position (like a suit pocket), Tasker will keep things silent. Very cool.
Edit docs while on the move
Editing docs on the go can save you lots of time and makes working on the move incredibly easy. Even if you only use it a couple times a year, it is much better to be prepared for the unexpected.
(Photo credit: http://www.flickr.com/photos/liewcf/3547134847/)