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>> Many of you have loaded your iPhone or iPod Touch with the latest iOS 4 and you're playing around with all the new features like multitasking and folders, but there are a lot of hidden gems you might not know about in the settings. With the latest OS, you now have the ability to turn off your cell phone data usage while still using the phone just for calls and text messages. All you have to do is go into your settings, then general and then network, and you'll see the cellular data option. And this is a big deal for people who want to save data. Now, I'm messaging on my phone a lot, and there's a couple new features here as well. Go to your messages settings, and you can turn on the character count function. If you're on the tight text message plan, you'll be able to tell if you're about to go over the character limit and avoid an extra message from being sent. You also have the ability to search through your messages, so if you don't see it, just pull down to reveal the search bar, type in a word, and voila, there are your messages with that word in them. And while we're talking about search, when using the universal search in iOS4, when you type in a word, you now have the ability to search the web or Wikipedia for that term. Now, let's shift over to photos. Your pictures can be organized into albums, but if you sync your iPhone with Apples iPhoto, your pictures can also be organized by faces and places, and it's just kind of fun to see where your pictures have been taken on a map, moving it around and looking at all of them. And any pictures in your camera roll that you decide to e-mail right after you hit the send button, you'll see a prompt that lets you choose the size of the picture that you can send off. I'm Brian Tong for CNET.com, and there's still more iOS secrets we have for you. And you might even find some for yourself, so use them wisely.