If you're lucky enough to have a 3G unlimited Internet plan, perhaps you might want to think about turning your phone into a WiFi access point with Joikuspot Light.
Using JoikuSpot Light you can share your high speed wireless connection with other devices, such as your laptop, iPhone, iPod Touch, etc. The application is very easy to set up and takes no more than a couple of minutes to get going. Once installed, your connection will be detected by any WLAN-enabled device in the surrounding area.
For web browsing, JoikuSpot Light supports HTTP and HTTPS, giving you secure access to pages. For added security it also lets you protect your connection using a WEP key. JoikuSpot Light includes support for VPN access, giving you access to your company's intranet, network and your email inbox wherever you may be.
JoikuSpot Light is really useful if you have other devices you want to share you wireless 3G connection with. If you haven't got any other devices, you won't really get any use out of the program.