How to Update your iPhone iOS Over the air through Wi-fi

Are you curious about how to update to latest iOS over-the-air (OTA) directly on your iPhone, iPad, or iPod touch?

As Apple has finally pulled the big switch in the cloud which helps you to go from one software version to the next, OTA and in-place faster than any iTunes restore past.

Let us go inside on how to update your iOS?

Starting an OTA update for iOS is easier than you may have ever thought. You might see a red notification badge on your Settings app which alerts you to update, or you might also have got a popup notification telling you it’s ready to install, but you can always check on your own, at any time. Make sure your iPhone is Factory unlocked or you will be stuck on Activation Screen until you factory unlock your iPhone from a genuine unlock vendor.

Here are the super easy steps for that:

1. Launch the Settings app
2. Tap to General
3. Tap Software Update
4. If no update is required, you will be notified so. Otherwise, you’ll be presented with all the details about the update.
5. Tap Download and Install
6. Agree to the Terms and Conditions
7. IMPORTANT! If your iPhone is not efficient to survive the update process, make sure you plug in and charge the battery! You don’t want your battery to die mid-update! (That may lead you to some scary nightmares!)
8. Watch the progress bar! (This part depends on the speed and quality of connection. Don’t get angry like HULK if it takes a long time, speeds up or slows down, or appears to jump around — be patient.)
9. Once it’s finished downloading, you’ll be prompted to install (and restart) your iDevice. If you don’t explicitly hit Later or Install within a few seconds, it will install on your behalf.
10. Agree to the Terms and Conditions yet again.
11. Apple will verify the install.
12. That’s it! You’re on latest iOS released by Apple

Not only does iOS 5 update OTA, it updates in place using bit-differential (delta) files, so you should get a faster, much more efficient process. For example, there’s no need to restore from backup afterwards or re-download your stuff.
Seriously, once the download finishes it’s amazing quick and smooth. Apple may not have invented OTA updates but if this is any indication, they’re doing them right.