Do I need a mobile connection (or a SIM card) to navigate ?
Customers often ask us whether they need to insert a SIM card into the tablet to navigate. No, it is not necessary at all.
It’s almost become an urban legend, which originated in the Apple world: on iPads, the cellular chip and the locator chip are on the same circuit board and so models without a cellular chip also don’t have GPS chip. As a result, many have concluded that a cellular network connection (and therefore a SIM card) is required to enable location.
This is absolutely false, localisation works very well without a SIM card, it uses the various satellite networks accessible anywhere in the world. In the case of the SailProof tablet, the tracking chip will combine signals from the GPS (American), GLONASS (Russian) and GALILEO (European) networks, possibly corrected by the American (WAAS) and European (EGNOS) SBAS networks. You will therefore obtain a very precise position, even in the middle of the Atlantic, thousands of kilometres from any cellular network.
On the screenshot below (taken in real conditions, WIFI and 4G connection deactivated), you can see that the signal of 21 satellites is acquired (for 28 visible in total) which allows positioning with an error of only one meter.
If you have any questions, please contact us directly.
Happy boating!
Related Articles
I have an issue with my SIM card. How to solve it?
Be cautious when entering a SIM card or memory card and follow exactly the instructions in our manual. A card inserted upside down (be careful here: the picture of the operating instructions shows the BACK SIDE of the tablet) or crooked may damage ...What do I do if my GPS sensor loses its position? How can I check whether my tablet is receiving satellites?
A number of free applications are available to help you assess satellite reception. These applications allow you to observe the constellations (Galileo, GPS, GLONASS) and satellites detected by your GNSS sensor, as well as information about its ...Is it possible to retrieve maps from a Navionics Micro SD card on my tablet?
Navionics charts on memory card are specifically designed for chartplotters and are not compatible with Android or iOS devices. To use Navionics charts on a tablet, you will need to install the Navionics Boating application, available from the Google ...All you need to know about Waterproof Charging
Waterproof charging had been long on our wish list and developing list. This year we finally managed to implement a solution and make it available to our users. Currently the waterproof charging option is only available on our X models. Our brand new ...How do I install an SD memory card?
To be usable, an SD card must be formatted to FAT32. It is possible to reformat the card on the tablet. Important note: you will lose all the data on the card. There are 2 ways to use the card, either as a tablet memory extension (internal storage) ...