Our company sends text messages to many customers at once. How to send it? (Use my Nokia n70)

You can set up a customer group you want to send in the address book, add contacts when sending messages, open that group, and everyone in it will be added. Just send it. Another way is to add contacts, that is, use the selection key in the middle of the five-digit navigation key to mark the people to be sent one by one, and then confirm to add and send them all.