Did you know that there are a few secret codes on the iPhone that can do some really cool stuff?

Let’s say you’re calling up your old boss who fired you for calling him a loser, and you want leave him a thankful message — but don’t want him to know it’s from your iPhone. All you have to do is first dial *67 then his number, including the area code.

Want to know how many minutes are left on your phone data plan? Press *646#.

So, you’re going to let your son use your iPhone to play Grand Theft Auto, and he has a girlfriend he calls everyday living in Pakistan. Dial *33* and then enter your PIN followed by a #. Tap the green dial button. Saved $20, didn’t ya?

Did you know that you can create a signature in your e-mail on the iPhone? Yep, you can. Just go to Settings, Mail and scroll down to Signature. Click on “All Accounts” and type in your name.

Everybody has a router that connects them up to the Internet using a computer, iPhone or iPad. In the back of the router is a USB port. So what can you do with a USB port in the back of your router?

You can actually plug in a printer to the router’s USB port instead of plugging it into the USB port on your laptop. You can also plug in an external hard drive in the back of your router and use that to save files, photos and music.

To do that, just open up the Finder on a Mac or My Computer on a PC. Your hard drive icon should show up where you can copy files to it. Better yet, you can download pictures to a flash drive, and then plug that flash drive in the back of the router’s USB port. Now turn your TV set on, go into its settings for the USB drive and you’ll be able to see all the pictures on your TV set that are on the hard drive that’s connected to the back of your router. I’ve done that and was blown away viewing my photo on my big screen TV.

You can send a bunch of photos using iMessages to any friends, and all they have to do is take their finger and scroll through all the pictures. At the very top of iMessages is an icon that looks like four tiny squares; when touched, it will display all the pictures.

Here is a good one. You can tell Siri: “Hey Siri, take a screenshot,” and it will snap a photo of anything that’s on your iPhone display.

On your iPhone, if you want to use caps while typing in Notes, hold down the Shift key, slide over to a letter and it’s automatically in caps.

If you press on the circle with a face in it on the lower left, it will take you to the Keyboard Settings, where you can change any setting or language.

Let’s say you’re reading a text-heavy article on Safari and need to locate a specific word or phrase. You can now use Keyword Search instead of having to scan through the entire article. Type the word you’re looking for in the Search bar, scroll down and select “On This Page.” You can now search for Emojis.

Here is a valuable one that everyone should do. To keep away third-party observers who may attempt to track your online activity, you can protect your safety and privacy by preventing websites from seeing what sites you’re visiting and your identity. Go to Settings, tap on your name on the upper left, select “iCloud” and turn on “Private Relay.”

Another good one is the ability to increase the size of text in some apps. Go to Settings, “Control Center” and add the “Text Size” option. Then, when you want to change the size of the font while using an app, swipe down to open Control Center, tap the “Text Size” icon and adjust the size to your preference.

Now you can take a photo in FaceTime. Click on the white circular shutter button to snap a photo during the call.

On the new Monterey that came out on Oct. 25, you now have the option to Share Play from your iPhone to a Mac. Click on Screen Mirroring on the iPhone by swiping from the right top corner down, click on the double square box icon and click on “MacBook Pro.” You can airplay Music, too.

Send your computer-related questions to MauiMist@aol.com.