Does the Eelink device work the same in all locations and areas?

No. The Eelink device works best in suburban areas such as neighborhoods, houses, schools, parks, and flatter regions. It can receive a GPS signal better in these areas because there is less obstruction of the GPS signal. The better line-of-sight the GPS , the more accurate the position will be. The Eelink device will work on a limited basis in cities where there are many high-rise buildings because the buildings decrease line of sight to the GPS signal causing errors in positioning.