Awhile back I accidentally assigned a Speed Dial key to the number 1 on my BlackBerry 8320 Curve cell phone. The problem with this is that the 1 key is reserved for Voicemail. When VM is dialed with that speed dial key then the Voicemail Settings are used so if you have password protected your voicemail, as noted here, then you can have the password automatically entered when dialing VM by using the 1 Speed Dial key.
Anyhow I wasn’t sure how I could go about assigning Voicemail back to the 1 key so I could use these settings. I finally figured out that if you remove any Speed Dial assignment you have to the W or 1 key and then remove the battery from your phone to reboot that the VM will automatically be assigned back to the 1 Key. This will allow you to now hold the W or 1 key to Speed Dial VM and automatically send your password so you do not have to type it in. This will make dialing your T-Mobile Voicemail much more convenient .