Lower Phone Bills with GPS Tracking

My sister-in-law is not one to find her way easily especially when she is driving and is new to a place. The last time she went by herself to attend their high school reunion in Bulacan, it took her hours to get to the place.  She kept calling everyone asking for directions.  Hubs suggested that she should have gps tracking installed so she can easily find her way.  So when she told my brother about this, he immediately sent her the small device.  Navigation ought to be easy for her now that she has GPS and I'm sure she'll save more on phone bills.