Mobile Presence Phone vs. tablet

Got a question on mobile presence. I have my android LG G4 phone setup in mobile presence with geofencing. Often this does not work. I did a bit or research and found the suggestion to expand the fence area a bit, which I have done. Question is I have 3 or 4 tables around the house all with the Smartthings app installed - does the system see these as my android presence or just my phone?

How fast should the geofencing respond? Often I’ll pull into my garage only to find the alarm going off and all the lights on as I have set if the system is triggered. I have a motion sensor in the garage to turn the lights on if I’m out there and to serve as a security sensor when I’m gone. I’d like to add time of day/sunset to the light portion of the setup, but have not discovered how to do that yet.