im wondering the same thing
You can't!
No, you cannot not, i have that phone & i can only put it ion their by using text templates. To do this, go to Templates/ text message templates/ options/ create. Type your signature and save it. Then after you type in your message, go to options/ insert/ Text Templates, ans select the signature. It may be a little inconvenient, but it's better that nothing.
A good text message signature could be anything (mood, marital status, etc.)
it will say signature on the bottom of the text message
It is what the person receiving the text will see a the bottom of your message. Ex: say my signature is JAKE. At the bottom of the message the receiver will aaa JAKE
Voice Signature is a new technique enables you to authenticate the text (or other mobile phone) message record with a voice signature. A service called My Electronic Evidence lets you memorialize an electronic record (like a record of a text, photo, video or e-mail message) with a date, a voice statement and a notation about where you think the message came from and how you preserved it.
Option's
At What rate of speed does a text message travel phone to phone
can u put a text signature on a kin phone
Yes you can, all you have to do is break your phone, the rebuild it without factory settings/
You cant
At&t