Pros Device worked fine.
Cons When I purchased the device, the information I received stated that it would be deactivated after 365 days of inactivity. However, it was deactivated after only 60 days of inactivity; I was told that I'd have to buy a new Sim card to reactivate it.
Summary I paid more for what was marketed as a pay as you go plan because I only needed the mobile hot spot on an occasional basis. However, when I complained to T-Mobile, I was told that once a pass has expired, the service is deactivated (no one mentioned this when I bought the device at my local T-Mobile store). Why on earth would anyone buy a device that essentially "expires" after one use? If you want a mobile hot spot with pay as you go service, I suggest that you buy it from someone other than T-Mobile.