If you're a BlackBerry user and a customer of E-Trade, you may be able to trade stocks on your phone. E-Trade Financial Corp. is releasing an application that will let them get real-time stock quotes and trade on their BlackBerry devices.

E-Trade Mobile Pro is an application for BlackBerry that allows real time quotes and trades. E-Trade decided to develop the application for BlackBerry because it is "the most popular smart phone system used among the brokerage's customers."

Customers with high end phones have been able to access E-Trade's services through a mobile web site. The new E-Trade Mobile Pro application is said to be much easier to work with.