According to Engadget, the Dell Android device will be available for $500 unlocked and open for use on other people’s networks.  The five-inch mini tablet is only an inch bigger than the HTC Evo, which is due to be released later this week and has many of the same specs: same Snapdragon processor, same 800×480 display, same ability to make calls, should you desire.

The Dell Streak is already confirmed for O2 in the UK, which will completely subsidize the phone with a two-year contract. The only carrier in the U.S. that uses the same frequency as O2’s radios is AT&T (T-Mobile uses different frequencies for 3G but would likely be able to connect to its EDGE network) so they would be a likely carrier partner.

It will be interesting to see if AT&T will offer the same data plans that they offer on Apple’s iPad, which is sold at the same price point, without subsidy.

I’ve reached out to AT&T for comment and have yet to hear back one way or the other.

CNET’s Ina Fried got a few minutes with the device today as you can see in the video below.

[youtube=http://www.youtube.com/watch?v=SL9ngNTbzEA]