I see that you've got a different APN entered to the one I gave you (wap.voicestream.com instead of internet2.voicestream.com). Are you on prepaid?
Anyway, these are different settings, and I've named then to match the settings on your phone.
- Service Type 1: WAP (What options do you have here?)
- Gateway IP 1: 216.155.165.50
- Port 1: 8080
- Domain 1: wap.voicestream.com (leave blank and see if it works first, I'm unsure of this)
- DNS 1: 216.155.175.40
- DNS 2: 216.155.175.41
- GPRS APN: wap.voicestream.com
If T-Mobile supports a similar model to yours, you could just say that you have that phone, and have them send you the settings.
If you have them send you settings, first rename the settings that you have already (put ME at the end of the name or something), that way, you know which came from where.