Dell Mini 3v - Manual (Page 69)

3 Tap To: to open Contacts and select the check boxes that appear beside the contacts you want to message.
1 Check boxes
2 Select icon
3 Select all icon
4 Press the Options button and tap Select or Select All on the Options panel to send the message.
5 Enter your message.
6 Tap Send.
To attach files to your message:
1 In the Home screen, tap Messaging to open the Messaging screen.
2 Tap New to open the Compose screen.
3 In the Compose screen, tap the Attachment icon.
1 Attachment icon
4 Tap an option to select the type of file you want to attach, and then select the file.