These are details for using the Samsung SGH-T719 with T-Mobile cell phone service as a GPRS Modem on the Palm TX handheld via Bluetooth.
You will need the T-Mobile “Total Internet” package. At the time of this writing, this package is not an option for me on T-Mobiles website, instead there is a “Blackberry Unlimited” option. According to T-Mobile's modem support department, the “Blackberry Unlimited” option does not work. I had to call T-Mobile to add the “Total Internet” option.
| APN | internet2.voicestream.com | 
| DUN | *99# | 
| Init String | at+cgdcont=1,“IP”,“internet2.voicestream.com” | 
| Username | [none] | 
| Password | [none] |