If you want to send a text, but don’t want to be limited by the tiny keypad and screen of your mobile phone, try opening the mail program on your computer. In the TO: field, type in the number and the carrier address.
If you don’t know the carrier, enter the number in 123-456-7890 format at:
For example, Verizon is:
firstname.lastname@example.org (where number is the cellphone #).
Test it on your cellphone, to make sure it works.