What phones are supported for GPS employee tracking?

Any landline or mobile phone can be used to capture login and log out data. (timestamp, employee number, job number, mileage). Any non-smartphone from AT&T, Sprint, T-Mobile, Boost or Verizon can be used to capture location information in addition to (timestamp, employee number, job number, mileage).  GPS employee tracking is possible on any carrier with an Android or iPhone using Timesheet Mobile app.