Since the release of the iPad on April 3rd, many iPad owners have been having issues with connecting to WiFi networks that use WEP security. Since the Sprint OverDrive uses WEP security by default, it has been a problem for some Sprint Overdrive owners who use the device to provide a 3G/4G mobile hotspot for the iPad. If you are having problems connecting your iPad to your OverDrive via WiFi, then we have a solution that will fix the problem! Since the problem is only related to WEP security, you will simply need to change the OverDrive's wireless security mode to WPA instead of using WEP.
For info on how to fix this issue, see the full article: iPad WiFi Issues With Sprint OverDrive