"I can look at the map on my phone."
I... don't understand. Could I say "我可以在手机上看地图”? The grammar seems to me to suggest that it's saying the phone possesses the map, or that you own the map.
Update: looking at my sentence again, the 的 is important because it distinguishes between "any map on my phone" (手机上看地图) and "THE map (specific to context) on my phone." Any other insights?