And, as ever, if you’ve got suggestions for more iPhone magic not covered here or in our previous Keyboard Shortcuts post, you know we want to hear them in the comments below.

10. Add Folders to the Dock

The ability to create folders is one huge improvement brought with iOS4, and is a very popular feature when it comes to organizing and accessing apps. In using folders, there’s a neat trick that will let you have all your most-used apps on your phone’s homescreen.

To create a folder, just press and hold any app until it starts wiggling. Then, drag the app into another app that you’d like to include in the same folder. The iPhone will automatically generate a name for the folder based on its contents. You can edit this name by pressing and holding the folder icon.

Once you’ve got your folders made, if you clear something less useful out of the dock (you can only have four things in at a time) you can drag and drop your folder into the dock for super-fast access.

With clever folder creation (Work, Play, Phone, Tools, etc) you could pretty much have everything you need one tap away from the homescreen, rather than scrolling through endless screens of apps.

9. Swipe to Delete

There are some handy features for deleting messages more quickly. The most common way to delete multiple messages in e-mail is to hit “Edit,” select the messages you want gone, and then hit the big, red delete button. Alternatively, you can simply swipe to bring up a delete option.

In your inbox, swipe your finger from right to left across a message and you’ll see a delete button appear. Press it and the message is toast.

Gmail users, however, may only get the option to “Archive,” so if you’re using Gmail you’ll have to tweak your settings first. To do this, go to “Settings,” “Mail, Contacts, Calendars,” “Google Mail” and then toggle the “Archive Messages” option to “Off.” This will now reveal that delete option.

This swiping trick can also be used for phone messages, Notes and more.