How to Control GPS Settings on the iPhone

Your iPhone includes a GPS chip like the one detect in standalone GPS devices. The iPhone uses the GPS bit in junction with cellular telephone towers and Wi-Fi networks in a serve called assisted GPS, which helps calculate the earphone ‘s position. You do n’t need to set up the GPS nick, but you can turn it off or limit its functions on the iPhone. here ‘s how .

How to Turn Off All GPS/Location Services

You can turn off all location services, including GPS, on the iPhone. hera ‘s how :

  1. receptive Settings on the iPhone .

  2. In the Settings menu, choice Privacy .

  3. Choose Location Services at the clear of the Privacy screen .

  4. Tap the Location Services toggle to change it to the Off /white position .

  5. Select Turn Off in the confirmation blind that appears .
    iPhone settings with Privacy, Location Services, and the Turn Off command highlighted

Limit GPS to only Some Apps

You can take a more specific approach path by limiting or granting entree to GPS information for specific apps. You can set when an app is allowed to access GPS information and other location engineering to Never, Ask Next Time, While Using the App, or Always .

  1. Go to Settings > Privacy > Location Services to return to the Location Services settings screen .

  2. Move the Location Services toggle switch to the On /green position if it is turned off .

  3. Scroll polish to the tilt of apps on the iPhone and select one .

  4. Select Never, Ask Next Time, While Using the App, or Always to regulate GPS and other placement engineering use for that app .
    The iPhone Location Services settings

  5. Repeat the process with each app on the list .

Limit GPS for System Services

Apps are n’t the entirely things on an iPhone that use GPS engineering. Apple System Services besides use location engineering. You might want to turn off location-based Apple ads, for exemplar, but turn on your location for emergency calls and SOS services .

To locate this set :

  1. Go to Settings > Privacy > Location Services to return to the Location Services settings shield .

  2. scroll to the buttocks of the screen and tap System Services .

  3. Tap the toggle future to each service to activate or turn off location services, including GPS, for that service .
    iPhone System Services and an off switch

You may see an arrow adjacent to one or more of the System Services .

  • A gray arrow indicates that the service used your location in the previous 24 hours.
  • A solid purple arrow means that a service used your location recently.
  • An empty arrow indicates that the item it is next to may receive your location in some instances.

GPS Systems

GPS is short-change for the Global Positioning System, which is a system of satellites put into orb and maintained by the U.S. Department of Defense. GPS finds a position through trilateration that uses at least three of a possible 31 satellite signals .

other countries have developed systems, but GPS is the entirely one in wide use around the universe. The only other system that is close in capability is Russia ‘s GLONASS satellite system. The iPhone is capable of accessing both the GPS and GLONASS systems .

One weakness of GPS is that its bespeak has trouble penetrating buildings, deep woods, and canyons, including urban skyscraper canyons. In these instances, cell towers and Wi-Fi signals give the iPhone an advantage over stand-alone GPS units .

GPS on the iPhone

Although an active GPS connection is substantive for apps that offer navigation and map features, there are privacy concerns related to its habit. For this reason, the iPhone contains respective areas where you can control how and whether the GPS capability is used on the smartphone .

GPS Complementary Technologies

The iPhone includes several complementary technologies that work in conjunction with the GPS chip to control the call ‘s location .

  • Accelerometer and gyroscope: The iPhone has a small six-axis gyroscope and accelerometer combination chip. The gyroscope tracks the orientation of the phone, such as whether it is held upright or on its side. The accelerometer detects and records motions the phone experiences, big and small, as data the phone and apps can use.
  • Wi-Fi tracking: When GPS doesn’t work well, such as inside buildings or among tall buildings, Wi-Fi tracking replaces or supplements it. Wi-Fi tracking uses a database of Wi-Fi networks around the world to triangulate the phone’s position based on multiple Wi-Fi signals.
  • Compass: The iPhone has a digital compass as part of its motion-tracking chip. The compass supplements other motion technologies and orients maps on the phone.
  • Barometer: You might think a barometer, which measures air pressure, is primarily a weather-prediction device, but it’s not used for that purpose on an iPhone. The barometer supplements the GPS chip and measures elevation changes to create accurate elevation and elevation-change readings.
  • M-series motion coprocessor: The iPhone uses Apple’s motion coprocessor chip to continuously measure data from the accelerometer, compass, gyroscope, and barometer. ​The coprocessor offloads work from the main processing chip for improved power efficiency.
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