Why can’t I get a signal in my office
For the phone to be able to connect to the network the antenna on the phone should have a clear line of sight with the sky.
Vertical obstructions can block the signal to the satellite.
For example, trees, mountains, and buildings.
Often you can make calls from inside while you are near a window but we recommend that you go outside where you have a 360 degree view of the sky.
Solar treated windows can also block the signal.
If you want to keep your phone inside but still receive signal use an external antenna. It can be combined with a docking station.