From a full charge, you can expect an 18-hole round of golf to consume about 60% to 70% of the Apple Watch’s battery.Ĭlosing (and not using) other Watch applications helps minimize battery consumption during your round. Using the GPS from your Apple Watch heavily decreases the lifetime of your watch’s battery. Some considerations regarding Watch GPS and battery consumption: If you choose the iPhone GPS, bear in mind that you should keep the iPhone in your pocket during the round. It’s easy! Long press the center of your watch screen to open up the Menu > Tap Settings > Toggle ON the switch if you want to use Watch GPS or toggle it off if you wish to use the GPS from your iPhone. This GPS screen will inform you what the source of your GPS is (iPhone or Watch), and how to change it. After starting a round on your iPhone, Hole19 will automatically appear on your Apple Watch and the first screen you'll see will be the ‘GPS source’ screen. However, if you have an Apple Watch Series 3 or above, you can now use the internal GPS of your watch. Make sure that both devices are within a 10-yard range to avoid pairing disruption. This error adds up over time, so your tracks are likely to be recorded as longer than you expect.If you use an Apple Watch paired with your iPhone, GPS distances on Apple Watch are based on the actual location of the iPhone to which it's paired. Inaccuracies Accumulate Over Time - When a computer, like an iPhone, Garmin, or Android, records GPS locations, each location or track point, has a small amount of possible error. This can result in track lines that have some scattered points and appear similar to the one below:ģ. Additionally, thick tree cover and cloud cover, or even tall buildings, can interfere with your device's connection to GPS satellites.Įven in perfect conditions, phones GPS can show a range of acceptable error. If you use an iPhone 6, you will get a more accurate distance recording than a friend using an iPhone 3GS. Your Device's GPS Accuracy - GPS accuracy varies across iOS devices, the newer the device the better the estimation. Trails are also measured using maps estimations, which can be very inaccurate, or using GPS devices, which vary in resolution.Ģ. The wheeler must be careful that the wheel does not slip, and wheelers have to decide which parts of trails to measure when there are difficult scrambling sections or two ways around a tree in the middle of a trail. Even with a wheel there is plenty of opportunity for errors. The most accurate measurements are done with a measuring wheel, which is rolled along the trail and has a revolution counter. Trail Markers and Maps are Measured in Multiple Ways - Trail markers and maps use multiple methods to determine the length of trails. We continue to explore ways to improve estimation of distance from GPS data, but there are limitations that will always exist.ġ. Even the most recent models of iPhones, which have better GPS chips, can easily vary by 5-30% from other readings.ĭespite the fact that Gaia GPS is calibrated to poll the GPS for maximum resolution and accuracy, the following factors confound estimation. You may find with Gaia GPS that your recorded tracks are not the same length as the track lengths displayed on other iPhones, Androids, GPS devices, maps, or trail markers.
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