As you know, recording a program on your Mobile device is a two step process. The first is the preparing which can occur while your GenieGO APP is shut down and it takes about an hour per hour of program. The second step is transferring the program from the Genie to your Mobile device and that takes a few minutes (6 or 8) per hour of program. For the second step the Mobile must be on your network with the App up and running. That copy will last for 30 days and will then self delete.
Personally I'd rely on the streaming option. I recently traveled out of state and we watch all of our regular programs each evening. In a hotel with a real slow Internet connection, the quality will suffer a bit.