well. between mead and snell is when you're getting closer to the boons.. anything north of tienken i'd say should be lucky to have service.. and most spots there do. I used to live in rochester and still head out there on a weekly basis so i know the area pretty well. In Lake Orion my phone works fine on baldwin near the mall, and all the way up m24 to at least lapeer. It works fine in a lot of oxford too. I've never had a problem in Troy, which is also pretty well covered.

I'll say this though.. if you plan to take your phone far north on rochester road (like towards lakeville), you may experience some deadzones, but in rochester itself it should work fine