How to chat on facebook? - Sony Ericsson XPERIA X10 Cell Phone

Is it just facebook or your internet connection ??..
The Facebook Chat feature allows you to send and receive messages in real time with friends who are online.
Your chat box reveals a list of available friends you can chat with by clicking their names.
For those times when you're not up for chatting, you can choose from several different privacy options, including disconnecting Facebook Chat.
You can opt to disconnect it completely, or just partially allowing chat availability for certain people and not others.
You can reconnect in a few quick steps.
Facebook Chat Availability

Your Facebook Chat availability determines how you appear in your friends' chat lists.
When you're logged in to your Facebook account, your name appears in the chat sidebars of any friends who are currently logged in.
When you set your chat preference to available, a green box appears next to your name.
When you're available, but idle, a grey moon appears next to your name.
When you're unavailable, your name appears without an icon.

Adjusting Chat Availability
Adjust your chat availability to control the visibility of your name in friends' chat lists.
Sign in to your Facebook account and click the "Chat" box in the lower right corner of any page to open your chat list.
Click the "Options" icon in the upper right corner of the box.
Click "Go Offline" to disconnect your chat availability.
If you're using the Facebook Chat sidebar, click the "Options" icon in the upper right corner of the box. Click the "Chat" box to open the sidebar if it isn't showing up on your home page.
Click the "Available to Chat" option to delete the check mark, making yourself invisible and unavailable to chat. Click the "Limit Availability" option and use the resulting pop-up to choose which friend lists you wish to remain visible to. This allows you to chat with some friends without others knowing you're logged on.
Disconnected Facebook Chat
Once you disconnect Facebook Chat or limit your chat availability, your online presence will be invisible to other users.
You can still browse the Facebook site as you would normally.
The appearance of your chat list won't be altered by your availability; you'll still be able to see which of your friends are online and available to chat.
That is, as long as their chat availability isn't hidden or disconnected.

Your Chat Messages

If a friend attempts to message while your Facebook Chat is disconnected, the message will be delivered to your Facebook inbox.
You'll receive an on-site notification, as well as text or email notifications if you're set up for that, alerting you that you have a new message in your inbox.
Click the "Message" icon that appears in the upper left corner of any page upon signing in to your Facebook account.
Any new messages will appear in the drop-down list. Click the "See All Messages" link at the bottom of the box to access your inbox and respond to any messages.

http://www.facebook.com/help/?topic=chat

after login facebook click facebook logo next check left side their have option chat off,click on it turn on chat you will get back chat on your htc phone.

Facebook affords its users several means of communicating with one another, from public posts made to the collective News Feed and individual users' Walls to direct, private messages. Facebook also allows for real-time chat communication between users who are both online -- this doesn't, however, include an option to chat using video as of this writing.

How Facebook Chat Works

Facebook chat functions much in the same way as standalone chat clients, such as AOL Instant Messenger and Windows Live Messenger. To chat with another user on Facebook, he must be one of your contacts and also be online. Two categories of online friends exist: Available and Idle. Available friends, which appear at the top of your chat list and have green dots next to their names, are actively using the site and, therefore, more likely to be available for chat. Idle users are not actively using Facebook, and although they're signed in, they may not be at their computer to chat.
Chat Capabilities

Facebook Chat is simple and, as of this writing, permits you only to send text in most cases. The one exception is in the case of emoticons. If you type ":)", for example, a yellow smiley face appears. Beyond this, Facebook Chat's list of features is rather limited. If you don't want to chat within the main Facebook interface, you can pop out the chat box and continue your conversation in a separate window. You can also make yourself go offline if you don't wish to chat with others or to let them chat with you.
Links and Videos

Although you may direct others to pictures, videos and other multimedia within chat -- namely, via text links to the URLs at which they're hosted -- it's not possible to embed images and videos themselves within a chat message. Furthermore, Facebook Chat isn't capable of video chatting, such as programs like Skype and Windows Live Messenger. If you want to communicate with one of your Facebook friends via video message, you won't be able to do so using Facebook Chat.
Skype Workaround

One potential workaround to Facebook not having video chat among its features is using Skype's Import Contacts feature. In addition to being able to import contacts from email clients such as MSN Hotmail and Gmail, you can enter your Facebook credentials and cross-reference your contact list to see which of your friends are also using Skype. After you've done this, use Skype to make free video calls with your Facebook friends who use the program.

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dear fren, i think you havent activated your account fully ... here are some steps to fully activate your facebook account and enable online chat ... 1. Go to your email and check for a email received by facebook and open it.. 2. click on the link given by facebook After doing that you can now chat online by facebook....
**This is the tips if your facebook is enabled and exclamation mark ' ! ' is displaying in your chat box...

some providers provide free facebook chat pages. please inquire from your providers customer care if such is there.

If you use Firefox, check if it has Java script enabled. Anyway, I strongly recommend Google Chrome for chatting. If you have any trouble with Facebook chat, find your solutions here with ease: http://www.likemetweet.com/Facebook-news/how-to-solve-facebook-chat-problems.html

When I open Facebook, I get a message, "Chat disabled on this page." How do I fix the problem?

Facebook Chat history is only stored by Facebook.com for a limited amount of time. You will be unable to access Facebook Chat history after this time.
The solution is to use a Facebook Chat Messenger that stores Facebook Chat History on your computer.

I can't get the chat to work on my facebook..I can see them and I can type in message..Just no way to send it