Block a message sender
You can block a person from contacting you by IM if you don't want to receive any further messages from them.
You cannot, however, block a person who is on your IM friends list. To block an IM friend you first need to delete them from your friend list (see Delete a friend).
1Open Messaging 
.
2Tap a conversation with the person you want to block.
3Open the application menu and tap Delete This Person.
4Tap Delete.
Delete a friend
1Open Messaging 
.
2Do one of the following:
•In Conversations view, tap a conversation with the friend you want to delete.
•In Friends view, tap a friend.
3Open the application menu and tap Delete This Person.
4Tap Delete.
Change your online status
1Open Messaging 
.
2Tap Friends.
3Tap the status icon to the left of the status description, and tap your new status.
Change your custom message
Your custom message is seen by your IM friends. It appears next to your IM screen name and status. It can contain any text you want.
1Open Messaging 
.
2Tap Friends.
3Do one of the following:
•If you already have a custom message, tap the current message and enter the new message text.
•If you're creating a custom message for the first time, tap the status text (Available or Busy) and enter the custom message text.
Change your IM account username and password
If you change the username or password for your IM account online, you need to enter the updated information for the account on your smartphone.
1Open Messaging 
.
2Open the application menu and tap Preferences & Accounts.
3Tap the account name.
4Enter the new information and tap Sign In.
Delete an IM account
1Open Messaging 
.
2Open the application menu and tap Preferences & Accounts.
3Tap the account name.
4Tap Remove Account and tap Remove Messaging Account.
96 Chapter 7 : Email, text, multimedia and instant messaging