IPad
From Droam Prepaid SIM Encyclopedia
You can view the APN settings on your iPad in the following location:
Settings > Cellular Data > APN Settings
To edit your APN, tap each field to enter the APN settings provided by your carrier. Tap Cellular Data at the top to save the changes to the APN and return to the Cellular Data settings.
With the iPhone Configuration Utility you can set your iPad or iPhone carrier’s APN (access point name) manually in case your 3G networking isn’t working properly, which can sometimes happen for developers running beta versions of iOS. It’s a workaround to be sure, but if you need your device on-network for testing and can’t wait for newer betas, sometimes a work around is just what you need.
Follow on after the break for step-by-step instructions.
1. If you haven’t already, download, install, and run the iPhone Configuration Utility from Apple for Windows or Mac OS X .