How do you view your iPhone backup in your PC?
Yes, depending on your state sales tax.
How do you view videos from your iPhone on your computer?
you can do that by iTunes, just tranfers file then view. enjoy.
How to Backup Your iPhone?
Backing up your iPhone is always a solid idea for protecting your media, applications and other content in the event your phone stops functioning. Thankfully, it is very simple to do.
If you back up your iphone, put in in regular mode (restore), jailbreak it and then restore your backup...?
I did when I did that with my iPod...which is kinda like an iPhone. So I would say yes
How can you retrieve SMS backup with your iPhone 4?
They are very good phones but xperia arc is better than iphone 4 for a little!! --------Arc is better but iPhone 4 is still the best when it comes to OS & Display. Check the sources below