There is a software update available for iPhone/iPad/iPod to version 5.1.
Here’s how to update. Please connect your iPhone or iPad to wireless network and power source before running the update.
- In your iPhone/iPad/iPod, go to Settings, General, Software Update, and touch Install.
- If you already applied the software update, you will see a message “Your software is up to date”.
After the software update, my iPhone now at 4G network, not sure if this will be the same for iPad.
I hope this help you.