Qualifying existing T-Mobile for Business customers with at least two paid voice lines on a qualifying plan may add an additional voice line to get the line for free after monthly bill credits, up to a maximum of 12 voice lines.
Sadly, you likely won't find the , , or a with these carriers, but there are still plenty of smartphones out there that you can get for super cheap or even free.
Wisconsin Cellcom offers a Lifeline discount for Wisconsin residents, but the details vary by county.