To edit a mobile device:

1. Click the "Messenger" menu in Yahoo! Messenger and select "Preferences."
2. Click the "General" category.
3. Click the "Edit mobile device" button and enter your Yahoo! ID and password to sign in to Yahoo! Mobile.
4. Under the "Other Mobile Devices" section, click the pencil icon to the right of the device. Edit any of the following information:
• Device's Make and Model
• Device's Name
• Daily Message Limit
5. Click the "Change" button to save changes.