How Much Data ?

[Corky]

If I'm to use my Samsung Tablet for my Navionics ap I'm going to have to subscribe to a network provider. How much data per month am I likely to use for the ap?

 

[jrudge]

On an Apple device you select the area you want and it downloads the map ( I have Navionics Europe). You could do this at home.

Logically it must refresh the map from time to time but I have never seen that happen. The only data then would be auto routing if you use it.

As such I would say little, or even none if you load the map at home and don't use routing. I have mine running on long passages well away from data and it keeps working.

Samsung maybe different but I would be surprised.

 

[gordmac]

My tablet doesn't do data, no SIM card, Navionics works fine. It does do gps though, if yours doesn't that may be different.

 

[[2068]]

My tablet doesn't do data, no SIM card, Navionics works fine. It does do gps though, if yours doesn't that may be different.

Mine works fine in “Airplane Mode” ... on an Airplane
If you’ve downloaded all the maps in advance over Wifi, subsequent data usage will be zero, unless you “log in” and use the interactive stuff or update the charts.

 

[Corky]

Thanks for the comments.

So........ once loaded the licensed maps the device uses no data moving maps as you progress? That's good.

 

[Alanij]

As others have said, you don't need to subscribe to a network provider. I use a Sony tablet (with no facility for a SIM card), have downloaded the area I want and update at home over wi-fi.
As an aside, I have just renewed my Navionics subscription to the new app and my renewal fee has gone up by about 50%.

 

[Sneds]

I purchased the app a few years ago, was a bit miffed when it stopped working and Navionics said I'd have to pay for the new app
How much do you have to pay now

 

[Sneds]

Forgot to say, it worked on my phone ok but can't see the I pad screen very well in day light

 

[rlw]

Got the app as a backup and runs on a samsung tablet without mobile data just wifi.

 

[SteveNotlob]

If I'm to use my Samsung Tablet for my Navionics ap I'm going to have to subscribe to a network provider. How much data per month am I likely to use for the ap?

I assume your tablet has built in GPS or you have a plug-in GPS attached? Not much use when out of range of mobile base stations and accuracy would not be very accurate even quite close to shore due to triangulation errors !

 

[Corky]

That would be an interesting comparison to make. If it's not using a mobile network, as discussed above, how do mobile base stations come into it? Surely it's using satellite GPS?

Thanks to everyone for your comments.

 

[Bigplumbs]

If I'm to use my Samsung Tablet for my Navionics ap I'm going to have to subscribe to a network provider. How much data per month am I likely to use for the ap?

Why not just set up a wifi hotspot on your phone and connect your tablet via wifi to that hotspot

 

[SteveNotlob]

Why not just set up a wifi hotspot on your phone and connect your tablet via wifi to that hotspot

Again, that is assuming the vessel is using inland waters or very close to shore which has good cellular coverage to obtain a reasonable location fix from a mobile phone base station!

 

[jrudge]

That would be an interesting comparison to make. If it's not using a mobile network, as discussed above, how do mobile base stations come into it? Surely it's using satellite GPS?

Thanks to everyone for your comments.

I don’t know how samsung tablets work but apple ...

- those with a SIM card also have gps
- no SIM card no gps
- the primary source of position is WiFi. It looks up the WiFi network based on the WiFi sniffing cars that go around ( you can look up your addess and find your WiFi ssid). It uses this as the basis of its position
- it then suplements that with the gps which is pretty weak / simple by full gps standards - which is why sometimes your phone will show quite a position differcne

Pure gps will work but it is assumed WiFi and probable cell towers will basically tell it where it is

 

[SteveNotlob]

When you say 'those with SIM cards also have GPS' - are you not mixing up GPS with GPRS? The latter (General Packet Radio Services) is based on mobile phone data, hence the need for a SIM card.
AFAIR the cellular location technology uses triangulation and / or RSSI readings to calculate your position. Not very accurate but good enough if you are walking / driving around an urban area. It is many years since I worked in the mobile phone industry so things may well have changed since then....
WiFi is, of course, only very limited range, counted in the 10's of metres maximum, hence why it cannot be used on a boat unless stationary in a marina that offers WiFi services.

 

[[2068]]

That would be an interesting comparison to make. If it's not using a mobile network, as discussed above, how do mobile base stations come into it? Surely it's using satellite GPS?
Thanks to everyone for your comments.

iPad with Cellular has a GPS chip inside it that can process Satellite Signals.
It doesn't rely on mobile base stations at all to get a position.
No idea about other tablets.

 

[grumpy_o_g]

When you say 'those with SIM cards also have GPS' - are you not mixing up GPS with GPRS? The latter (General Packet Radio Services) is based on mobile phone data, hence the need for a SIM card.
AFAIR the cellular location technology uses triangulation and / or RSSI readings to calculate your position. Not very accurate but good enough if you are walking / driving around an urban area. It is many years since I worked in the mobile phone industry so things may well have changed since then....
WiFi is, of course, only very limited range, counted in the 10's of metres maximum, hence why it cannot be used on a boat unless stationary in a marina that offers WiFi services.

It's just a quirk of the Apple chipset design. The chips that have SIM capability also have GPS on the chip and use station triangulation for a rough fix to make the GPS lock quicker. The chips Apple use for their WiFi only tablets don't have GPS on the chip and Apple chose not to add a dedicated chip.

 

[SteveNotlob]

It's just a quirk of the Apple chipset design. The chips that have SIM capability also have GPS on the chip and use station triangulation for a rough fix to make the GPS lock quicker. The chips Apple use for their WiFi only tablets don't have GPS on the chip and Apple chose not to add a dedicated chip.

I never knew that, you learn something knew every day
I really have no idea about Apple Anything, I personally don't like them and think they are over-priced, but there must be something positive about them as they do seem to have a large following...

 

[jrudge]

They are over priced by about double ! We all stick with what we know and the apps we have bought. They were the first to make true consumer computers ( Mac) and smartphones that just worked.

Sadly - certainly in the case of Mac this is less the case with every update and it seems to become more unstable and require more and more " fixing" which is a shame.

 

[Corky]

Mine is a Galaxy Tab S which purportedly has "A-GPS, GLONASS, BDS" but still confused as to whether I need a network so I'll simply give it a try.

Thanks again folks. Hope we all learned something - I did.