What are you able to do after you jailbreak your iPhone? Well there are quite a few things you can do. When you jailbreak your iPhone you have more apps to select from. A whole lot more!
Unlocking is a completely different process than jailbreaking, but if you use software to unlock you do have to jailbreak your iPhone. Jailbreaking allows you to access the root operating system in order to install software.
You can tether cheaper and better using MyWi which is an app for jailbroken devices only. It is far cheaper to use than AT&T tethering plan.
When you jailbreak you iPhone there more apps that you can use over 3G. With the My3G app you will find just how powerful your iPhone can be on the 3G network. But, remember you may be charged data rates so be sure you understand your plan as data downloads will add up.
You can have a cooler looking phone when you jailbreak it using Winterboard themes. There are also a variety of useful lock screens that allow you to decide just how you want to use and what you want to see on your lock screen. CyDialer is a favorite that you should look into.
But the best thing about jailbreaking is the fact that it is reversible. You can always take your iPhone back into time to factory defaults whenever you want. But that is probably not going to happen.