triangulation

Why are the maps on my iPad so inaccurate?

Apple iPad

Episode 1530

Dave from Sarasota, FL

Dave loves to drive when he travels, but the most recent car he has doesn't have a CarPlay option. How can he use an iPad as a CarPlay alternative for maps? Leo says a Wi-Fi iPad doesn't have GPS and as such, the maps are going to be inaccurate. Wi-Fi does triangulation of Wi-Fi signals that it can read, whereas GPS uses location based on a triangulation of GPS signals and cellular towers, which is far more accurate. He'd be better off using an iPad that has LTE.

Why doesn't Uber know where I'm at?

Uber for iOS

Episode 1417

George from Santa Monica, CA

George uses his iPad to call Uber, but they don't know where to pick him up. Leo says that's because the iPad doesn't have GPS. The app just has to ask for the address of where he is in order to find him. With a mobile phone, they would have his coordinates in the app. Without GPS, the app has to use other means to find his general location, usually it uses "WiFi triangulation," and that's not always very accurate. The app puts a pin where he is, and if it's using WiFi triangulation, the pin just goes close to where he is. The good news is he can move the pin in the app.