So digging into this and looking at the HTC site, they said that the SIM should be a certain SKU. When I checked mine, it wasn't that SKU obviously, and had a 3G logo on it. This is probably the reason why it sucks, anyone vouch for that?
Yes I can.
The HTC Inspire 4G ships with a proper sim inside _optimized_ for AT&T's network. It's my understanding that some stores are shortcutting the process and simply removing your old sim from your current phone and putting it into the Inspire.
That's exactly what they did with mine, even though I asked them not to. I took it back to the office and noticed the speeds were slower than my Captivate.
So I returned to the store, fortunately I took the new sim off the counter when the rep wasn't looking, so I had the one that came in the phone.
I demanded he activate that sim with my account info. Upon inserting that sim and booting the phone is was quite noticeably faster.
Due to my workload, I haven't had a chance to benchmark it, but I can tell you I know my Androids very well on the 3G AT&T network, as in my area its' very strong and fast. I use them so constantly, the difference is strikingly noticeable.
Now my Inspire is the fastest Android I have by far, after putting the chip back that came with the phone.
Demand they use the chip that comes with it when you buy yours, or if you have your phone already, demand that they use the proper chip. If they've used your existing 3G chip you are going to be cheated out of the speed the phone is capable of.
When they deny this, remember they are _sales reps_ (not techs) that probably slept through the training and will tell you anything.
Also if you call in, you will not get any more accurate info either, as they are call center people till you get to a level 3 technician, which is next to impossible, as they have rules that they are not to be taking calls.
Hope this helps.
Cheers...
By the way I was in Orange County on business this morning and my phone is very fast there.