First, welcome to S4GRU. Second, you can check market completion information here http://www.s4gru.com/index.php?/topic/212-Network-Vision/LTE-Deployment-Running-List
Detroit will see a delay in 800 LTE due to your proximity to Canada. http://s4gru.com/index.php?/topic/2358-everything-800mhz-1xa-lte-coverage-timeline-etc/ lots of posts to read through in that one.
Also, becoming a sponsor opens up a lot of information. Utilize the search feature on the forum. It will answer lots of questions. Read, read, and then read some more.
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