Which hand held device can I use for trading stocks remotely?

If it is a cell phone that’s fine. But I need a hand held device to trade stocks with as I cannot always be near my PC. I need to have wireless internet via cell phone provider and not just wifi.

You can trade using a Blackberry, iPhone, or any kind of smart phone that has a web browser. Some brokers such as Scottrade even have their own apps made specially for a particular phone like the iPhone.