What is the best cell phone for a referee?

[The R]

My current contract has expired and I am ready for a new phone. I wanted to see if there is a specific type of phone that the majority of you are using. Obviously it needs texting features. I am thinking along of the lines of keeping a schedule electronically or maybe tracking expenses.

I realize the Iphone can do everything I have listed here but I thought there might be some other options.

So tell me what you use and how it works for you.