I'm not sure if my sentence is correct. I have doubts if the first sentence correct in its constellation. Is it
In cities the location of a mobile phone on 100 to 500 m can be accurately determined.
or is it?
In cities the location of a mobile phone can be accurately determined on 100 to 500 m.
In the case that no sentence is correct I want to say the the position of a smartphone can be accurately determined within 100 to 500 m. In cities the mobile phone network is more accuarate than outside.