Today it finally arrived, after a lot of hassle. I'll post more about it after I've used it for a little while.

I finally received my call from T-Mobile on Friday regarding them sending me the wrong phone. They said they would get the MDA ordered that day and I should have it Monday or Tuesday. I have to send back the SDA within 14 days, so I'll be sending that today. I think I am going to have to call them again though because I got a text message confirming that my MDA had been ordered, but it looks like they charged me the "non-upgrade" price. This has really been a pain! I will say though, that every time I deal with someone from T-Mobile on the phone, they are very pleasant and seem like they are genuinely trying to help me.

Well, I received a phone yesterday from T-Mobile. Not the phone I ordered, but a different one. I received the T-Mobile SDA. According to this thread on Howard Forums, about 800 people who ordered MDAs got SDAs instead! Someone from T-Mobile is supposed to be calling me in the next day or two to straighten it out. I won't hold my breath...

Well, my Cingular 2125 sold on eBay. I got a good price for it. I tried to get the T-Mobile MDA from a T-Mobile store, but they were sold out. I tried to use the "My T-Mobile" site to upgrade my phone to the MDA, but they didn't even offer it. I checked almost every day to see if it would appear and today it finally did. I ordered it right away and it said I should have it in about 7 days!