I have a small cabin near Milltown WI that has extremely limited T-Mobile service. I have one window where my iPhone can reliably get service. However, I have to use the speaker phone to make calls, as moving the phone even slightly causes the connection to drop.
Until recently, I was lucky if I got Edge service, which was still totally useless for any data usage. A couple of months ago I started getting very limited LTE connections. The data rate is quite decent (~10 MBits down), but virtually useless, as I can't move the phone from the window sill (the saving grace is that the personal hotspot works with my laptop).
Last week I talk to T-Mobile about getting a 4G LTE Signal Booster. They graciously waved to rule that I could only have one Cell Spot device for my account (I already have a Cell Spot Router for my basement office; T-Mobile ROCKS!!!).
Just got the unit installed and running at the cabin. Here are my observations:
1. I have a VERY small cabin, making it very difficult to get enough distance between the window and repeater units to get everything working optimally.
2. It would be very helpful if there was a window unit available that could be installed outdoors. Another option would be supporting an external directional antenna.
Overall, this is a great step in the right direction. It would be nice if T-Mobile would come up with an even better solution for those of us who are in really marginal areas and can't use WI-FI calling because we don't have internet access.