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This is pretty typical of all GPS devices when turned on. You have to remember that most phone apps turn off the GPS chip when you are not actively navigating or viewing the map, in order to save battery. When I turn on my Garmin, it will take up to a minute to find the sats and determine it's location. The initial reported accuracy will be something like 90 feet or so. Over the next 1-2 minutes, the accuracy will fall to 2 meters or so. I have used quite a few apps on my wife's iPhone 6 and my Android phone, and the behavior is the same. The difference is that with my Garmin, the GPS is active whenever it's powered up. On our phones, the GPS does not go active until we call up the map or compass or select 'Navigate' to the target. And it will take 1-2 minutes to sync up and take a few readings to get it's position and accuracy down. And then with any of our devices, the magnetic compass is useless until we exit the metal automobile. Try setting your phone to Navigate on the map or compass screen 2-3 minutes before you arrive at your parking destination. That will give your phone GPS time to acquire and settle by the time you exit the car.