how do you set a signature on a blackberry?

For Text use Auto Text

Options icon - Auto Text

Press the Menu key and select New

Replace:

sig

With:

What you want your signature to say

Press the Menu key and select Save

When you want your signature to appear type sig then press the Space key

For E-mail:

Setup icon - E-mail Settings

Log into your BIS

Select an address and select Edit

Type your signature in the Signature box

Click Save