Does My SGH-I637 (Jack) Phone Support Signatures On Outgoing Messages?

Yes, to add a signature to outgoing messages follow the steps below:

1. From the home screen, press the left soft key for Start
2. Select Messaging (1)
3. Select Messages (1)
4. Press the right soft key for Menu
5. Select Tools (7)
6. Select Options (3)
7. Select Signatures (3)
8. From the Messages account, highlight "Use signature with this account" then press the OK key to check the box
9. Highlight the Signature box then press the clear key
10. Enter the desired Signature, using the keypad
11. Press the left soft key for Done to save Messages account Signature

For more information on the SGH-I637 (Jack) or click here.