Author Topic: Mobile: GPS Technology and Trouble shooting issues  (Read 434 times)

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Offline Fish Hound

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Mobile: GPS Technology and Trouble shooting issues
« on: August 29, 2017, 09:45:36 PM »

With most mobile devices, location technology is built into the device. Your approximate location is determined using the internal A-GPS (assisted GPS) receiver. This receiver is assisted by cell signals, but does not rely on them entirely. Once you have downloaded Navionics mobile applications to your mobile device, they are resident on your device and are a reliable tool to access charts even when not in cell range.
 
Please be aware that some mobile devices do not have an internal GPS receiver.

We have not tested our apps with any third party external GPS receivers. These devices may function with our apps, but since we have not tested them we cannot guarantee their functionality.

Also, please keep in mind that the Navionics mobile app is for recreational and reference use only. The internal GPS receivers on mobile devices are not as reliable as what you would find on a GPS chart plotter. The Navionics mobile apps are a useful tool for reference, planning and can be an adequate backup GPS to a chart plotter. However, for serious navigational purposes, we recommend using our plotter cards for use with GPS chart plotters.

If you are experiencing an issue with determining your GPS position, please follow the procedure listed below:

iPhone

If you are not able to display your position on your Navionics mobile app for iPhone, you are going to want to make sure that your ?Location Services? are turned on. You want to go to your main iPhone menu, and go to Settings > Privacy > Location Services. Turn on the ?Location Services? function as well as any apps that utilize the GPS function in your phone, including the Navionics app(s).

If this does not correct your issue, try closing out of all running app and restarting your device. Once restarted, go back into the Navionics app to see if the position has corrected itself.

If your location is still inaccurate, open your Maps app and determine if your location is accurately being reported. If it is not, it is possible there is something wrong with your installation of iOS and/or the hardware in your device .​

If your location is accurate in the Maps app, but you are still unable to locate your position properly in the Navionics app, please submit a ticket by going to http://navionics.force.com/MobileTech. Be sure to note in your ticket that you have already tried forcing GPS services to refresh (as this will be the first thing we ask you) and confirmed your location permissions.

iPad

Navionics mobile HD apps are compatible with both the iPad WiFi + Cellular and the iPad WiFi-only models; however, be advised that the WiFi-only model iPads do not have an internal GPS receiver. This device will not be able to display your location when outside of WiFi range. If you are within WiFi range your experiences may vary.  Not all WiFi connections are created equal so you will need a registered WiFi network (such as your marina network, at home, or at work) to generate a correct position.  Using an unregistered network such as a mobile hotspot may not give you correct positioning.  Articles online also explain that tethering mobile devices (such as iPhone to iPad) will not work. If you are using the Navionics mobile app for the iPad, we recommend using the WiFi + Cellular models, which will have an internal GPS receiver.

If you are using the WiFi + Cellular model and you are still not able to determine your location you are going to want to make sure that your ?Location Services? are turned on. You want to go to your main iPad menu, and go to Settings > Privacy > Location Services. Turn on the ?Location Services? function as well as any apps that utilize the GPS function in your iPad, including the Navionics app(s). If you are unsure if your iPad has an internal GPS, tap on Location Services in your iPad settings. At the top of your screen, in light gray text, it will say "Location Services uses GPS, Bluetooth, and crowd-sourced WiFi hotspot and cell tower locations to determine your approximate location". If it doesn't say it uses GPS, your Navionics app will not accurately track your position.

If the information provided above does not correct your issue, try closing out of all running app and restarting your device. Once restarted, go back into the Navionics app to see if the position has corrected itself.

If your location is still inaccurate, open your Maps app and determine if your location is accurately being reported. If it is not, it is possible there is something wrong with your installation of iOS and/or the hardware in your device .​

If your location is accurate in the Maps app, but you are still unable to locate your position properly in the Navionics app, please submit a ticket by going to http://navionics.force.com/MobileTech. Be sure to note in your ticket that you have already tried forcing GPS services to refresh (as this will be the first thing we ask you) and confirmed your location permissions.

Android platform

If your GPS position is not being displayed correctly, please make sure that your mobile device has an internal GPS receiver. If it does not have an internal GPS receiver, you will not be able to determine your location outside of WiFi range. If you are using a device with an internal GPS receiver, please follow these instructions to resolve your issue:
Go into your device "Settings"
Select "Location"
Turn "Location" OFF and restart your device
Go back into your Location Settings and turn "Location" back ON
Three options are available for utilizing Location within your device under "Location Method":
GPS, WiFi and mobile networks - uses all three options to triangulate your position, so is the most accurate and uses the most battery life
WiFi and mobile networks - uses only WiFi and mobile networks to determine your location and uses less battery life
GPS only - uses the GPS receiver only to retrieve your position
​If your location is still inaccurate, open your Maps app and determine if your location is accurately being reported. If it is not, it is possible there is something wrong with your installation of Android OS and/or the hardware in your device ​

If your location is accurate in the Maps app, but you are still unable to locate your position properly in the Navionics app, please submit a ticket by going to http://navionics.force.com/MobileTech. Be sure to note in your ticket that you have already tried forcing GPS services to refresh (as this will be the first thing we ask you) and confirmed your location permissions.

Offline DA TOAD

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Re: Mobile: GPS Technology and Trouble shooting issues
« Reply #1 on: August 30, 2017, 04:24:36 PM »
Good info...thanks.
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