I have had T-Mobile for over 10 years. We go to Wyoming and Montana often (every 2nd or 3rd year) and always had reception. Last year nothing in either state. I think T-Mobile customer service said various areas have their own agreement with ATT as the backup carrier. And Wy and Montana ATT won't let T-Mobile on AT ALL!!!!
Fortunately we have a 2nd phone with ATT.
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Tom and Gail
2013 Mountaineer 362
2012 Silverado 2500
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