The steps are similar for the iPhone, iPod Touch and the iPad.  On a device that supports only a single ActiveSync profile, make sure to back up the data on the device before configuring the ActiveSync profile for MS Live access.

Click here to view the video on how to setup MS Live on your iPhone.

Here are the step-by-step instructions:

1. Tap on Settings. Under Settings, click on “Mail, Contacts, Calendar”.
2. Tap on “Add Account” in the Accounts page.
3. Tap on “Microsoft Exchange” to configure MS Live access.
4. Enter your full MS Live email address in both Email and Username fields. Leave Domain blank. Enter your password. In the Description field, enter a name, e.g MS Live .
   Please note that you may have to wait a few seconds after step 4 before the 'Server name' field appears.
5. Enter pod51010.outlook.com for the Server name.
6. Select the data to sync. Tap on Save.

If the phone doesn’t connect verify to Server Name in your MSLive accounts by clicking on Options > See all options > Settings for POP, IMAP and SMTP access
If you wish to setup pop3 on your iPhone please try the following steps:

1. Tap Settings > Mail > Add Account > Other > Add Mail Account

2. Enter Name, MS Live Address (Your Live ID), MS Live Password
Note:  You may get an error message saying that you will need to be a Windows Live Hotmail Plus Subscriber.  If you see this message, please press "OK" to ignore the message.

3. Click "Save" and your account will be automatically configured at this point

4. Now please go to the IPhone mail client and start downloading your pop3 messages.
Note:  The first download from our pop3 servers could take up to 5 minutes for the first sync.

If for some reason the phone does not auto populate the server information, please use the following server settings:
Pop3 Server: pop3.live.com (Port: 995)
SMTP Server: smtp.live.com (Port: 25)
Advanced Settings:
Incoming Uses SSL:  On
Outgoing Uses SSL:  On
Authentication: Password
Delete from Server:  When removed from inbox

NOTE: With POP3, there is no synchronizing. For example, if you read an e-mail message on your iPhone the message will be unread if you view your MS Live account on the web. Also, only messages in your MS Live Inbox will display on your iPhone. Other folders, and any messages in them, will not be displayed.