SMS method of adding numbers not saved in contacts
(4 or more)
How to use
When you write a message, 4 or more correspondents' coordinates are or can be entered as phone numbers only on account they were never previously saved in contacts.
When you tap the checkmark icon in lower right corner of the keypad, it brings up a dialog box where you can add numbers separated by a comma (1XXXXXXX, 1XXXXXXX, ... ).