Need to know the difference between SD and SDXC? There are a ton of different formats and capabilities for SD cards. They've changed a lot since 1999. This guide includes everything that you need to know about them.

Regardless of why you want to keep your text messages secret, this is a handy trick that you may not know. Perhaps you use your phone for work and don’t want personal messages popping up while you're with clients. Keep your private messages private by using iPhone’s secret feature.

Here’s how:

• Open the Notes App.
• Type in a subject for your note.
• In the top right-hand corner of the app, tap on the person icon to add someone to the note.
• Tap the three dots at the top of the note.
• Select Share Note.
• Under Share Options, choose Can Make Changes.
• Choose how to send your note.

Now that a person has been added to your note and allowed to make changes, you can communicate privately. And it won’t show up in your text messages.

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With shady activity and privacy breaches constantly occurring on Facebook, it's not surprising if you're thinking about leaving the platform for good. But before you go, you'll want to find a simple way to take all your important photos with you. Thankfully a tool makes the process super easy. We'll give you step-by-step instructions on how to do it.

The internet is full of junk. We find the good stuff for you, from helpful tools to get stuff done to the best apps and websites out there.

You probably have thousands of photos on your phone eating up space, and you want to preserve those memories. IDrive is the perfect solution for backing up and protecting all your precious photos and videos. Use it to back up all your devices: PCs, Macs, servers, iPhones, Android phones and more. Sync everything to one account.

IDrive is like an insurance policy for your data. Plans start at less than $7 a month.

Our phones are our lifelines to our friends and family, but what happens when we can't reach everyone we care about when we really need to? You can set up your phone to do it for you. We've got the steps to alert your trusted friends and family in case of an emergency.

It doesn't matter if you're on foot or driving an old car — navigation apps will get you where you need to go. But there's more to it than that. Waze lets you change the voice directions to a man, woman, celebrity or dog. If that's not enough, you can use your own voice. We'll show you how.

Over on my Instagram page, I share photos of my life. I keep my profile private, but I'll add you!

Getting a good night's sleep can be difficult. Sometimes we can't get comfortable, or the room is just too hot. But that's just here on Earth. Imagine the issues astronauts have getting some shut-eye in space. There are a ton of issues these courageous men and women have to deal with. Spoiler: It's not easy to sleep in space if you're claustrophobic.