Hi Robert,

There are many possible issues, which can cause your problem.
So, it would be good to see more details. Please, prepare two
measurements using cell_log application: one inside any
building, and another one outside. Attach both outputs from
the cell_log and from the osmocon.

I have several phones, and some of them have different RX
signal level. I think, it's due to individual calibration
tables, which aren't used in OsmocomBB firmware.

BTW: if your phone's case is open, make sure that antenna is
connected to the phone's board.