Yes Sir, the gps in a phone will locate your position, but the gps kills the battery on my cell phone, the Dual battery lasts almost all day and works better at finding and keeping more satellites and triangulating a location because the gps in my phone sucks. In certain places even with internet, my position will jump around because the phone wont stay triangulated. I also dont have to worry about mounting my phone. The Dual sits on the dash without any mounting hardware. I have a tablet that the Dual pairs with on bluetooth so I also have bigger screen than my phone to navigate with. But, its also unnecessary if your phone gps works for you..