Hi - I am a total newbie, having only looked for and found one cache so far. We used my husband's GPS, but having just got a smartphone, I'd like to be able to use that too. So I went to my account, where I was offered the "Add a Device" option. I have a Samsung Galaxy Fame (GTS6810P), for Android, and among dozens of Galaxy phones, it wasn't there. There seems to be no option to add it, so does that mean I can't use it for geocaching ?