That having been said, you know, and I know, that there are times when your cable modem goes down and you have a bandwidth emergency. You're not planning to abuse your data contract, but you do need a backup plan for those rare instances so you can get some work done.
Enter MyWi, for jailbroken iPhones.
Selling for ten bucks via the Rock Store and Cydia, MyWi enables tethering on your 3.1+ iPhone (2G, 3G, 3GS) and creates a personal Wi-Fi hotspot. It's as if AT&T had actually enabled the feature on-board. What's more, it works just like a real hotspot does.
Unlike other solutions that require you to create ad-hoc Wi-Fi networks on a Mac and then connect to them from your iPhone, MyWi works like the Sprint/Verizon MiFi. You can connect to your iPhone data from an iPod, a laptop, or even an iPad. They'll see your iPhone as just another Wi-Fi hotspot. If security is an issue, MyWi offers optional WEP with a customizable key.
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