Mac 101: Create a wireless network between Mac and iPhone

Many applications require your Mac and your iPhone to be on the same wireless network in order to communicate properly or sync. Apple doesn't advertise the ability to use such applications without a wireless router... nor do many developers. It's not only possible, it works great in a pinch or even as a standard. A few quick examples:

Be a makeshift DJ. I have a lot of music on in my iTunes Library. If there's something I or my friends want, I'll buy it and add it to the collection. Because of that, I get asked "Can you bring your music to the party tonight." I used to say no, because I didn't want to play DJ all night and miss out on the party. Now, I can setup a network anywhere I go and control my iTunes Library directly from my iPhone with Remote.app -- even play requests during a conversation.
Keynote presenters unite! Creating a wireless network on your Mac frees you to worry about your presentation not the availability of wireless in the lecture room. Setup a network, connect and you're swiping through your slides.
Sync applications anywhere, anytime. Victor just pointed this out today... if you're in an airport and need to sync some information from a desktop app to your iPhone, you don't need to pay for the airport wireless. Syncing apps like Bento, MacGourmet, Things, TextExpander or any other apps that sync over the network can update whenever you want without issues.

I'm sure there are many more uses for this idea... those just name a few. Please read on for a step-by-step, illustrated guide to create a wireless network between your Mac and your iPhone (or iPod touch).

Click the AirPort icon in the menu bar and select "Create Network."

Name your network. In heavily populated areas, making the name unique would be a great idea. For this demo's purposes, I just named it "Josh's Laptop."

You have the choice to require a password. In all of my use, I've found that iPhone-to-Mac connections remain more stable if I require a password and select 40-bit WEP. Again, I'd suggest a wireless password in high-traffic areas like airports.
Click "OK" and it will create the network. That's it for the computer side.

With your iPhone or iPod touch, open the settings app and tap "Wi-Fi." You should see the network you just created on your Mac. Tap it and allow it a moment to connect. I have never seen the "3G" go away next to the carrier logo when connected this way... so don't worry about waiting for the AirPort icon appear. Every app I've tested still recognizes that they're on the same network. Open an application and test.

I chose to open Remote.app and connected to my iTunes Library.

As you can see, it connected just fine. From here I can use the Remote as if the devices were on the same wireless network. Turning on the "Stay Connected" feature will always result in better stability. Without that on, I found it difficult to find the Laptop's Library after a few idle minutes on the iPhone.

For those of you who are wondering about distance, I have remained connected to the Laptop at well over 100 feet away. I did notice that everything is a little more stable within 100 feet. You are, after all, broadcasting a wireless signal with a device that's real purpose is to receive signal.

Your friends may never notice that you're able to do cool things without a wireless router... you could tell them OR just stand in amazement at your ability to blow your own mind with a Mac and an iPhone or iPod touch.

Please let us know of other amazing uses you find.

UPDATE -- Thanks to ZipperSeven, S, and Joseph, I'm happy to give you another cool use for your reading pleasure. Provided that you're connected to an internet connection via ethernet, you can just share that network to other computers using AirPort and it will allow your iPhone access to the internet when no other solutions are available. In System Preferences, go to Sharing - Internet Sharing - Share connection from Ethernet - To computers using Airport - Click Airport Options and set it up the same way as described in the post. Check the checkbox and confirm that you want to share the connection. That's it! This tip is only if you have an ethernet connection... otherwise I'd recommend following the steps in the post. Please read the comments for even more tips from our readers.

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Many applications require your Mac and your iPhone to be on the same wireless network in order to communicate properly or sync. Apple...

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ASHI

5 stars to this App.
We are in the maldives and there was no way for my wife to connect to the internet with her Iphone. The wifi just didn't reach all the way to our villa.
She lives off the Iphone and all the social network apps :).

I had my Mac connected to the in villa ethernet and googled something like Connect mac to Iphone wifi or something like that and this blog came up.

The comments helped a lot coz the initial blog was not really geared to using this as a lan and allowing access to internet throught he wifi.

Set it up in minutes and it works great. I would recommend this little trick to everyone I know.

Thanks for making our trip better and allowing my wife to give minute by minute updates on facebook about what we doing here.

December 04 2009 at 2:28 AM Report abuse Permalink rate up rate down Reply

vwbeeve@gmail.com

this used to work for me until I upgraded to snow leopard now airport gets stuck either on or off and then gets a self assigned ip address message that wont allow an internet connection. But I used to love it because I could surf the net on my ipod while my girlfriend was using the computer.

October 20 2009 at 8:09 AM Report abuse Permalink rate up rate down Reply

Dan Kassis

Can you use this feature to sync podcasts from iTunes to your iPhone if you don't have your sync cable with you, for instance. Do you need any other app on the phone to accomplish that?

September 30 2009 at 9:44 AM Report abuse Permalink rate up rate down Reply

Hans

Does anyone know how to enable WPA2 in this setup instead of WEP
on Snow Leopard.
Tiger had an AirPort Admin utility which allowed this, but is missing in SL.
Thanx!

September 28 2009 at 12:55 PM Report abuse Permalink rate up rate down Reply

tuaw

Can you please tell me the small application that adds the hard drive free space info to your icon, as shown in the upper right hand corner? I saw it months ago at an AppleStore, but they did not know where to download, and my search was in vain. So far... Thanx!

September 26 2009 at 10:40 PM Report abuse Permalink rate up rate down Reply

tuaw

September 26 2009 at 10:38 PM Report abuse Permalink rate up rate down Reply

1 reply to tuaw's comment

Drifter71

It's not an app. I used to do this on my tiger machine, so it should be built into it. Right click on desktop, show view options and there should be a checkbox that says list info or display information. Might want to make the label info font smaller too. Hope it helps.

October 01 2009 at 2:30 PM Report abuse Permalink rate up rate down Reply

muranosky

Has anyone used iphone to advance slides in a powerpoint presentation from a computer ?

September 26 2009 at 6:33 AM Report abuse Permalink rate up rate down Reply

ryan

i made a post about how to do it with windows 7 check it out http://www.doztech.net/chm/post/Connect-your-iPhone-to-your-Windows-7-Laptop.aspx

September 26 2009 at 4:28 AM Report abuse Permalink rate up rate down Reply

hank brummels

I use this "trick" to share my broadband usb stick with my iPod touch. So it isn't limited to ethernet. However, I have to trick it sometimes. After a shutdown or restart I have to travel back to the sharing pane and unselect and reselect the internet sharing to get the connection to work again. I wish it would just stay on...anyone else experienced this?

Also it never worked before iPhone OS 3.0. But as soon as I loaded it in June it worked great (except the unselecting and reselecting trick)

September 25 2009 at 9:47 PM Report abuse Permalink rate up rate down Reply

1 reply to hank brummels's comment

SiPodder

Yeah, hank, I have that problem as well -- in Tiger and all versions of Leopard. Forgot to mention it -- and haven't researched it -- as I seldom restart. But it is bothersome.

September 26 2009 at 2:35 PM Report abuse Permalink rate up rate down Reply

SiPodder

I've been doing this with my iMac for years -- sharing its ethernet connection via built-in Airport to my iPhone and Apple TV. No Airport base station or other router involved. And when friends are over they can use it too.

September 25 2009 at 7:04 PM Report abuse Permalink rate up rate down Reply