What is GPS and how does it work?

What is GPS (abbreviation for Global Positioning System in English - Global Positioning System) is a satellite navigation system that operates in the world coordinate system WGS 84. GPS allows you to determine the location and speed of objects almost anywhere on Earth. Interestingly, the system was developed and implemented by the US Department of Defense, but is currently used for civil penalties. Russia has created its own satellite navigation system called GLONASS and we have already written about it. The systems work in a similar way, but the GLONASS satellites are more stable.

Some time ago, GPS was rarely used in phones, and therefore it was a kind of curiosity that could surprise people. GPS

Almost all modern devices have a built-in GPS module. GPS. It was originally developed in the US. with military fines, but then his signal became available to everyone. The device's GPS module is a receiving antenna with an amplifier, but it cannot transmit a signal. By receiving a signal from the satellites, the smartphone determines the coordinates of your location.

Almost every modern person at least once used GPS navigation on a smartphone or tablet. The need for it can arise at any time in people of different professions and various occupations. It is necessary for drivers, couriers, hunters, fishermen, and even ordinary pedestrians who are in an unfamiliar city. Thanks to such navigation, you can determine your location, find the desired object on the map, build a route, and, if you have access to the Internet, avoid traffic jams.

The navigation system allows you to:

1.- Get the addresses.

2.- Location check.

3.- Reception of geodata in the photo.

4.- Find the address of interest.

5.- Find out the travel time.

Why do you need GPS on your phone?

The abbreviation GPS stands for Global Positioning System. Translated into Russian - global positioning system. That is, GPS is the function that allows the location of the user to be determined. And in this situation, many may think that the system is used only to track the user. But such an opinion is wrong.

Activation of GPS leads to the fact that the owner of the smartphone has the opportunity to determine his own location. This is very useful when a person is in an unfamiliar city and needs to get from point A to point B. On the map, the user's movement will be displayed on a detailed map, where it is simply impossible to get confused.

GPS-enabled smartphones are not only used by ordinary motorists, but are very popular with couriers and taxi drivers, especially when it comes to big cities.

Also, motorists will surely appreciate the feature, because geolocation allows you to use your smartphone as a navigator. Additionally, location detection personalizes the advertising served to the owner of the mobile device.

The location function is used in some services. For example, in a social network, you can post a photo and specify the coordinates where it was just taken. There are services that allow you to mark your location not on simple maps, but in a store or cafe, so that the user can send your message to friends and invite them.

There are even dating services based on the user's current location. So the user indicates where she is and sees other users on the map. For example, users can know each other if they are very close on the map.

Offline maps for GPS

Google has developed a special geolocation application for its Android operating system: Google Maps. Quickly find satellites, develop routes to objects and offer alternatives. Unfortunately, in the absence of a cellular network coverage area, Google Maps does not work, since geographic maps are loaded here via the Internet.

For offline navigation, the best solution is to download apps that support offline maps, such as Maps.me, Navitel, and 2GIS. You can also install the Maps: Transport & Navigation app for Google Maps.

In this case, you will not have to spend Internet traffic to download maps: they will always be on your device, regardless of location. This is especially true when you are abroad, as the cost of roaming to access the Internet is very high.

Applications such as TomTom or Navitel.- stores all the maps in the internal memory of the smartphone. You only need an internet connection to use online services like showing traffic jams. In other words, such navigation applications will establish a route through an unknown area, where there are practically no means of communication and the Internet. And this, among other things, allows you to save money on traffic. Similar apps are paid but have a free trial period.

Therefore, offline applications work everywhere, even in the wild, the main thing is the presence of a map loaded into memory (therefore they are great for driving around the city or on public roads). However , they largely "eat" the internal memory of the smartphone (due to the large volume of maps) and require regular updating of map data.

Disadvantages of GPS

As such, there are no issues with GPS, but it's worth remembering that location can't always be reliable, as there are margins of error. For more precise positioning, you can use both navigation systems at the same time: GPS and GLONASS, especially since both are used in many devices.

The rest of GPS has solid advantages. In addition, the system does not really affect the cost of the device, which can be traced in the cost of smartphones - even the cheapest devices are equipped with GPS.

It only works when connected to the internet. All your maps, databases, etc. they are located on the developer's servers, only the interface program for working with them is installed on the smartphone. Therefore, the maps are constantly uploaded to the smartphone, which requires a stable Internet channel. These applications have a fairly significant mobile traffic consumption, this must be taken into account when choosing a rate plan with your mobile operator. Especially when traveling.

It is also worth remembering that reliable reception of the satellite signal is possible in open areas, so when you are indoors or in a tunnel, geolocation becomes impossible. Cloudy weather also affects: due to clouds, the satellite device searches longer and determines its coordinates with less precision.

GPS usage and battery life?

Despite the undeniable benefits of geolocation, many users reject it simply because they are afraid of quickly downloading their smartphone. But is it really so?

Unfortunately, the answer to this question will not be comforting. A smartphone with active GPS wears out much faster. Other things being equal, if we do not take into account the game mode, with the geolocation function, the energy consumption increases by 20%. Therefore, it is recommended to use location services only at the right time.

During active operation of the smartphone's navigation system, its battery charge begins to be consumed quite actively, so you need to take care of additional power sources.For example, when you drive, you need to use a car charger, and when you ride a bike or walk, use a power bank.

¿How to Program GPS on Android?

Fewer apps make sense without the use of GPS. This global positioning system is present in all smartphones, regardless of the range to which they belong. That is why GPS failures can occur in any terminal and at any time. It helps to be prepared and have a good set of tools so you know what to do when it's not working properly.

Thanks to the so-called GPS or Global Positioning System, the exact position of any object, person or route can be determined with centimeter precision. This system works with a network of 24 satellites that orbit our planet and that receive signals from our mobile phone and refuse to return them and thus determine factors such as position, speed, course, etc.

How to activate GPS on Android?

Since the location function is ubiquitous and indispensable, the developers have provided very simple ways to activate the sensor. You can understand exactly how the sensor turns on, even without instructions and without the help of specialists. But, if you are unable to activate geolocation on your own, it is recommended to refer to our detailed instructions for help.

1.-Through the quick access panel

This is the easiest and most understandable way to activate the sensor. From the owner of the smartphone it is only required to press a button. But first you need to call the quick access panel. Also called the notification tone.

To open the panel, you need to swipe down from the top of the screen. You can perform the operation both in the main menu of the smartphone and in any open application. After the swipe, the same panel will open in front of the user, where you need to find the "Geolocation" item. In some cases, it is called "Location" or simply "GPS".

After clicking the icon, it will be highlighted. This is the main indication that the phone's sensor is activated and ready to use. You can now open maps to navigate and access other location features.

2.- Through the configuration

Answering the question what is GPS on a smartphone and how to use it, it can be noted that this option does not start automatically. To enable it, you will need to use the settings section. The activation path differs depending on the phone model. It is worth studying the standard action scheme that can be used on most devices:

To activate the function you need:

1.- The curtain with the standard notifications moves down.

2.- Press a bar that shows the date, time and total charge level.

3.- You must click on the gear button, then you will be taken to the configuration.

4.- Here you should find the Personal Information tab.

5.- Click Verify location.

After performing such an operation, a switch will appear at the top that launches the browser. You must get into a working position.

3.- Configure the GPS in the phone menu

Activating geolocation on the phone does not always allow you to immediately determine your location using maps. Therefore, for the sensor to work, it must be configured. Fortunately, there is nothing difficult about performing this operation.

First, you must enable GPS using any of the methods proposed above.

Second, allow location determination via different sources:

GPS

Bluetooth

Wi-Fi.

This will allow you to more accurately navigate the map. Also, you need to set the permission for the sensor to work in various applications. If this is not done, the navigation will not work in Google Maps conditional.

You can set permission to work with GPS through the "Location" menu mentioned above. If necessary, it is allowed to prohibit the use of the sensor for individual programs. Here you have a wide range of options. The main thing is that geolocation is confirmed for all types of browsers.

Finally, you need to activate the GPS in the application itself. Open, for example, Google Maps and tap the "Go" icon. Depending on the program used, it may look different, but the essence of it does not change.

4.- Configure the GPS with the engineering menu

GPS is stable, but this is not always the case. For example, owners of MediaTek processor-based devices complain that the service runs with major interruptions. In this case, you will need to configure via the engineering menu.

Entering the engineering menu is quite simple. It is enough to open the bookmark and enter the appropriate command. The request list for different models is shown in the picture.

After entering, you need to press the call button, and then the same engineering menu will open. As a rule, it is presented in English. But the navigation is quite easy. The user must go to the "Location" section and activate the GPS services as indicated in the following image.

The following values ​​are edited in the "AGPS" and "GPS" menu items. Take a look at the screenshot again.

The final step is the "EPO" tab. Here is a system file that stores the location of the satellites. Then we go back to the "YGPS" section to check the satellites. If they are red, geolocation is not working.

To fix the error, you need to reset the satellite search process. This is done through the "Information" section. Press the buttons indicated on the screenshot.

Now at least some satellites will work. And if you were unable to configure the GPS through the engineering menu, then try to repeat the operation, starting from the training video.

How to check the GPS module on Android? To test the operation of navigation on your phone, you will need to download the program on Google Play, the engineering menu is not needed here. If necessary, special tests can be performed using the GPS test.

This utility is characterized by providing a large number of functionalities.

You have the following information:

1.- Number of visible satellites.

2.- Satellites used.

3.- Positioning precision.

4.- Location coordinates.

5.- The time zone where the user is.

6.- Position of the satellites in the sky.

7.- Functioning and readings of the electronic compass.

The owner of the smartphone receives information such as the speed of movement, date, time, altitude, information about sunrise and sunset.

Take a photo with GPS coordinates?

To activate the display of the address where the photo was taken, you will need to follow a few relatively simple steps. Initially, you need to activate the camera and verify that the add coordinates option is activated. If the user uploads the captured photos to the Internet, the coordinates will automatically be available to everyone who views the content.

Select an option for information:

1.- High accuracy rates. In such a situation, the operating system uses the information available from devices such as a GPS module, a standard mobile network and WLAN. This will allow you to get the exact coordinates.

2.- Load saving. In such a case, a conventional phone or tablet will obtain location information based on the mobile network or WLAN.

3.- Device sensors. Here, the positioning information will be analyzed from the GPS module.

Among these methods, the second is considered optimal. But it often doesn't work on tablets that aren't designed to work on mobile networks.

How to improve GPS reception?

To achieve this goal, you must use the app from the developer Mediatek. It allows you to precalculate the orbits of the installed navigation satellites. Despite the versatility of the product, it has one drawback: EPO data is designed for Asia and fails in the process of use in Europe. To correct, configure and improve the work, you will need to carry out manipulations according to the following instructions:

1.- A menu with settings opens.

2.- Go to the Time tab.

3.- The desired time zone is configured manually.

4.- Go to the section of your own location and access to geodata is allowed.

5.- The check boxes are marked in the By network coordinates and By satellites elements.

Using the file manager, you need to go to the root directory and delete all the files where the word GPS is written.

After performing these actions, you need to go to the area where there are no high-rise buildings and update the data with coordinates. The loading of new information is done in a matter of seconds.

If done correctly, the satellite modules will turn green. To be successful, it is important to ensure that the smartphone does not turn off. You need to disable sleep mode completely. Once the satellites have changed color, the phone must be turned on and restarted. If the user has performed the actions correctly, the navigation on the smartphone will work smoothly and quite accurately.

How to disable GPS on Android?

If you don't need a browser, if you want to reduce the download rate of the phone and increase the security level of the device, you can disable the option. To do this, the following actions are performed:

• 1.- Swipe down from the top of the screen.
  
• 2.- Attention will be presented with a table or list of options.
  
• 3.- You must find and click on the corresponding icon, which will disable the browser.

If you don't need to provide your own location, if you want to hide the location from authorities or corporations, simply turning off the feature will not be enough.

You will need to remove the battery from the phone if you do not need to use your smartphone for some time. You can clear the history in the section with Google maps. These actions should not be performed if the smartphone uses applications that cannot work without location tracking.

14 GPS problems in mobile phones?

1.- The GPS of the mobile phone does not connect.-This is one of the most common problems that we can find. I accept that we press the GPS correctly, but the application that requires its use does not respond. This may be due to a bug in the application itself or to the configuration of the GPS itself.

2.- Diagnose the mobile.- Before moving on to the possible solutions, it is worth stopping and taking a look at the diagnostic tools of our own mobile phone. Brands like Samsung, Xiaomi, Motorola, Realme, LG or Sony have their own applications to determine if there is a problem with the system and specifically with the GPS configuration. These tools are found on these devices as separate applications.

3.- Restart the phone.- This is the next step that we must take when we cannot connect the GPS correctly. In this case, we must perform an action as simple as trying to restart the mobile phone. This allows you to free it from any files or apps that might be interfering with a proper GPS connection. When the system restarts, we will try to establish a connection again.

4.- Activate and deactivate the GPS.- The on/off for life solution continues to provide excellent results. Just slide the shortcut bar and disable GPS. Now we must wait at least 30 seconds and reactivate the GPS to see if the problem is solved and if it connects correctly.

5.- Clear application cache.- As we mentioned at the beginning, simply activating the GPS does not make much sense since it is a application that performs the necessary functions to be useful to us. For example, we may want to run it to use WhatsApp location time while traveling or to position ourselves in astronomical applications such as Google Sky Map. When the GPS is connected but the app can't connect, clearing the cache usually works fine.

To do this, we must first turn off the GPS and go to the Settings / Applications menu to find the application in which the GPS does not work correctly. When you're done, click on it and select "Clear data and cache". Then turn on GPS again and try again.

6.- The case may be to blame.- This is a classic and one of the main reasons why the GPS does not connect. If we have a case or shell, try removing it and try again. If this works, it is possible that said cover contains metallic elements that are interfering with the operation of the GPS antenna and its correct connection.

7.- Access to safe mode.- The so-called safe mode is a lifesaver when things go wrong, especially when there are problems and we suspect an app might be involved. To enter we will have to press and hold the power button. Then we select “Power off” but keep the Power button pressed. The computer will automatically restart and boot into safe mode. In this way, our mobile will start without running third-party applications, which will allow us, first of all, to check if the GPS works correctly. If so, we must delete the applications from the most recent to the oldest and restart the terminal to see if the problems disappear.

8.-The application permissions.- If a particular application that requires GPS permissions does not have these, it will most likely not work correctly. This usually happens when we have revoked permissions by mistake. In order to check this we will have to go to Settings / Installed applications / and enter the application with which we are having problems. If, for example, the problem is that Google Maps cannot connect to GPS, we need to make sure that GPS is allowed in the permissions.

The GPS does not determine the location correctly.- In this case we managed to get the GPS to connect correctly, but the precision it offers regarding our location is completely inaccurate. This makes it impossible to use games or applications that require our location in real time. Once again, we will have several good solutions at our disposal to try and fix this problem.

Check date and time.- It is very important that our smartphone shows the correct date and time, otherwise the GPS can find us in a different time zone and throw precision errors. To be sure, we'll go to "Settings"/"System"/"Date and time" and make sure the "Automatic date and time" box is checked. If it is already activated, we should try to deactivate it and activate it again. Once the GPS is ready, it should work properly and determine our correct position.

9.- High precision mode.- In order to save battery, our mobile has several modes to activate the mode location. The most accurate of all, uses the device's sensors as well as Wi-Fi and mobile networks to be as accurate as possible. This is a method that we will have to activate to avoid errors with the location and its precision. This option is usually found in the "Settings" menu, in the "Location" or "GPS" options of our terminal by clicking on "Location mode".

10.- It could be a compass.- There are many sensors in our mobile phone, but the compass plays an important role. This allows the GPS to identify us and know when we are going north and when we are going south. If it's not calibrated, it's unlikely we'll be able to tell where we are or where we're going in an app like Google Maps. Some phones come standard with a compass app, so you can pop it in and calibrate it in seconds, if not, we can download one from Google Play to do the same and fix accuracy issues.

11.- Reset A-GPS data.- The so-called Assisted GPS or Assisted GPS is used in our mobile phones to get faster location and positioning. Sometimes it may be convenient to reset the data so that everything works with greater precision. To do this and see if the problem is solved, we can try one of the best applications for this purpose, such as "GPS Status & Toolbox". Among your options, we can reset or download A-GPS data regularly to give you a faster and more accurate location.

Mobile update.- Many updates to our mobile are aimed at solving or improving known bugs. Sometimes they are related to the GPS, so updating the mobile can be the solution to our problems. If we have not updated the device for a long time, we must go to System Settings / System Updates to check if we have any pending updates. Once all pending updates are done, it is recommended to restart the mobile and try again.

12.- Problem with GPS in Chinese mobiles.- It is known that many Chinese mobile phones have problems with GPS. This has been happening since the time of importing Xiaomi mobiles with Chinese roms and of course it is happening nowadays with other devices. The main reason is that the terminals are prepared to connect to Chinese satellite networks, so when working with them in Europe there are problems of accuracy or connection. In the case of Xiaomi, GPS failures are known in the Mi A family, but also in many Redmi. In this case, apart from all the tests that we have seen before, we can also try two solutions that usually give

13.- Activate Google location accuracy.- This feature helps to solve accuracy problems with Chinese mobiles in many cases, including Xiaomi. This has been a lifesaver for many A1, A2 or A2 Lite that have been running Android One like other Chinese phones with problems.

1.-We go to Settings / Location on our mobile.

2.- Go to "Location services" and go to "Accuracy of Google location".

3.- Activate the option to solve the problem using the switch.

14.- Solve the problem with GPS Fix .- We find one of those "wonder applications" that have been working with us for years success to fix GPS issue on chinese mobiles. You just have to read the comments on google play to see how it solves these bugs on all types of Chinese mobiles. We will only have to download the application from Google Play. Once this is done, we must click on the "Start repair" option with GPS enabled. The app will start to connect to the GPS, which can provide the best accuracy and thus correct any location errors.

What to do if the GPS doesn't work?

There are several problems that we can find on our mobile when it comes to GPS problems. Luckily, if it's not a hardware problem with the GPS antenna, it's easy for us to fix it ourselves, given the possible solutions available to us. Since there are several scenarios in which the GPS of our mobile can fail,.

What needs to be done first?

First, make sure you have enabled GPS on your phone. Secondly, you need to check if geolocation is allowed in the application you are using. If no bans are set, then there really is a problem with the sensor.

Why is there no signal?

Possible causes are divided into software and hardware. In the first case, the problem is solved by changing the settings or removing viruses, but in the second scenario, the sensor needs to be completely replaced.

How to solve the problem?

First, try rebooting your smartphone. Perhaps the error was a one-time occurrence. If nothing helps, try configuring the GPS through the engineering menu as shown in the article. As a last resort, do a factory reset.

Disable and Enable GPS on iPhone?

So, if you need to disable or enable GPS on iPhone, you need to open the Settings app first. This can be done simply by clicking the icon of this application on the iPhone desktop.

After opening the Settings app, you need to go to the "Privacy" section (or "Privacy" section if you have an older version of iOS). This section is located roughly in the middle of the list, after the "Touch ID" and "Battery" sections.

In the "Privacy" section, you need to open the "Location Services" subsection. This section should be at the top of the screen, and next to it will indicate whether or not GPS is currently on.

After that, you will be taken to the "Location Services" subsection. All GPS related iPhone settings are available here. At the top there will be a switch with which you can disable and enable GPS on the iPhone. If the switch is green, then GPS is on.

What is mobile geolocation?

Geolocation is the determination of the real location of an electronic device, which in our case is a smartphone or telephone. Geolocation is not tied to satellite systems, location can be determined by the location of cellular network stations, or, for example, by connecting to the Internet.

Why do you need geolocation? It may be necessary for the positioning of a person (smartphone). Imagine that you have opened a map application on your smartphone and you need to get to a certain street. To get an accurate route, the app needs to know your exact location. Another example: you post a photo on a social network and to determine the location where this photo was taken, you need to use geolocation.

Enable geolocation on Android?

Please note that mobile device manufacturers may use various firmwares that change the appearance of the case and often the names in the menu. We will show an example in the standard version of Android 4.4.

Many applications need to use geolocation to work. You don't have to go far: grab some maps or a navigator; without a location, such an app just won't work properly! And if you don't know how to enable geolocation on your smartphone, we'll show you what to do.

Method 1 Geolocation

1.- Let's start with the application itself. We launch, for example, Google.Maps.

2.- Click the button "Location".

3.- And we see a request to enable geolocation. All you have to do is click the OK button. In this case, geolocation will be available to other applications (location can be disabled separately for each application in the "Application rights" section).

Method 2 Geolocation

1.- Call the menu, look for the button "Geolocation", GPS or "Location data " and click it.

2.- Geolocation function enabled.

3.- If you keep the button pressed, the geolocation configuration menu will open. So here you can choose the location mode. Take a look at the screenshot below: only Wi-Fi and mobile networks are used.

4.- Of course, this option saves battery power, but it shows the user's location with much less precision. It is better to use the first option, with GPS support.

Method 3 Geolocation

What other options are there? Please enable geolocation via settings.

1.- Go to "Settings" on your desktop.

2.- Select Location data.

3.- Use the right switch to enable the functionality.

4.- In our opinion, it is more convenient to use the first or the second method.

Disable geolocation on Android?

There is an opinion that activating geolocation on a smartphone consumes battery power. This is true, but only if an app that uses geolocation is currently being terminated. If such an application is not being terminated, then there is nothing to spend. But if you still want to disable geolocation, we will show you what actions you should resort to.

1.- Call the menu and look for the icon "Location data" (or "Location"). Click on that.

1.2.- The icon changes color, the function is disabled.

2.- The second way is not so convenient. Open the Settings app.

2.1.- Click on the line "Advanced configuration".

2.2.- Then - "Location data".

2.3.- If you cannot find that item in the menu, use the search key "location(s) "

2.4.- Change the switch "Share location data" to the position " disabled".

2.5.- Geolocation is now disabled. But, you see, using the first method (1) is much more convenient and easier.

How is GPS spoofing?

This is an attack whose main goal is to change the original location of a GPS device. To do this, the attacker uses a radio transmitter that emits a false GPS signal and interferes with nearby GPS receivers. As a result, fake GPS coordinates are displayed on these devices.

The Global Navigation Satellite System (GNSS), of which GPS (Global Positioning System) is a part, is also used to synchronize the date and time between devices around the world. Therefore, if your device is under attack, it can also suddenly show that you are in the future or in the past.

How does GPS spoofing work?

GPS spoofing attacks used to be very expensive and were mainly used for military fines. Why? Because GPS spoofing can provide incorrect coordinates for the location of ships, planes and vehicles to mislead the enemy. Phishing is still used for this purpose, but it is also available to regular hackers. All you need is an open source portable radio transmitter that can be purchased for less than $300.

GPS determines your location using satellites that orbit the earth. They continuously transmit radio signals that GPS devices use to triangulate your location.

The problem is that when these radio signals reach your device, they are quite weak. This means that any transmitter with a stronger signal can perform a denial of service attack. The transmitter simply overrides the signals and makes your device display any given location. Why is this a problem? Because it can affect any GPS device.

What is GPS spoofing used for?

Taxi drivers can use it to disguise their location to earn more money or stop (even if the trip is not completed).

GPS systems are used to track drivers and deliver goods.

Long-haul truck drivers often have GPS-powered geofencing systems that track the truck until it reaches its destination.

Attackers can spoof the location of the truck to steal its cargo.

Some apps can help spoof the location of the smartphone.

This can even be if you are hiding from someone.

But then you will not be able to use reliable GPS directions.

How to fake your location on Android?

No wonder your Android phone knows your location. There are times when you don't want to be tracked by your phone or other people. We'll show you how easy it is to spoof your location and set it anywhere.

Of course, if you just don't want to be tracked, you can disable the sensors entirely. Spoofing your location will allow you to trick any app that uses your location into thinking you're where you're not. People have used this to cheat in location-based games, but there are many other reasons for this.

We'll be using an Android app called "Fake GPS Location". Download the app from the Google Play Store to get started.

Fake GPS location Place your GPS location anywhere with this fake GPS location app, which is for developing or testing the ability of other apps to locate GPS information without the need to pick up a GPS signal.
For developer testing purposes, this fake GPS emulator allows you to fake your GPS coordinates. It can be your GPS tester and helps to test GPS status and fix GPS location. Also, the fake GPS location is stable and does not jump between real and fake. If you are looking for a fake GPS locator to change the

How to use Mock Location on Android

Then use your finger to move the pin to any part of the map and press the start button in the lower right corner.

The app will be closed and your location is now spoofed. To disable this, swipe down from the top of the screen and tap "Pause" on the fake GPS notification.

Difference between A-GPS and GPS?

Disadvantages of A-GPS

And yet, you must understand that along with the advantages of A-GPS technology, it also has disadvantages.

Some A-GPS receivers are included together with a radio module. If the radio module (GSM) is disabled, A-GPS will not be able to start.

A-GPS transmits a certain amount of information over the Internet. You need to understand that for the transfer of even a small amount of information while roaming, a decent amount can be written off from your account.

Outside of cellular coverage and without Internet access, the A-GPS Quick Start feature will not work.

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What is GPS and how does it work

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What is GPS and how does it work? .-
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