Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




1662 posts

Uber Geek


#195537 23-Apr-2016 13:42
Send private message

Just a question of curiosity.  Folks went to China, he had a Samsung J5, got a China Mobile simcard.  Some photo's have GPS co-ordinates and some do not.  What is happening here, is this China or was it simply they were in a area outside cell coverage?  Also how does the device get the co-ordinates - do they need a simcard or mobile data?  Does it work with a bare phone?

 

 

 

 

 

 

 

Cheers. 


Create new topic
9795 posts

Uber Geek

Lifetime subscriber

  #1540654 23-Apr-2016 13:49
Send private message

GPS comes from the sky (satellites). I can still use google maps to display my location with no mobile data or wifi connection, it just wont update/render the maps in locations it hasnt cached.

 

unsure if you need mobile data for it to tag the photos though.


1923 posts

Uber Geek


  #1540740 23-Apr-2016 17:13
Send private message

As Jase says GPS is a space based system and does work in China ( used it on a Nokia up there last year), although the Chinese do now have their own system....FWIW.

Tagged photos may be geting cell site derived/assisted positions.

For any GPS device to work it needs to spend some time getting the latest (local) Almanac (or ephemeris) data. If you've shifted a distance of hundreds of km or more ( NZ to China counts!) since you last used it this can take 15minutes or so, and you have to be outside and with a clear horizon view of the sky. This last bit can be tricky to achieve in urban China, which means it could take a lot longer.

And if your folks hop on a plane and fly a few hours east ( or any direction), then they're back to square one.
Even on a train journey you won't get reliable coverage

 
 
 
 


3890 posts

Uber Geek

Trusted

  #1547845 6-May-2016 22:10
Send private message

As already mentioned a cellphone doesn't need a mobile connection for the GPS to work, but it can take a while to provide a position fix if it has been shifted some distance from the last place it was used.

A mobile connection or cellular data will speed up the time it takes for the phone to provide a position fix. The phone is able to get basic position data to help pin point it's position while it updates it's GPS almanac.




Sony Xperia X running Sailfish OS. https://sailfishos.org The true independent open source mobile OS 
Samsung Galaxy Tab S3
Nokia N1
Dell Inspiron 14z i5




1662 posts

Uber Geek


  #1605734 7-Aug-2016 08:50
Send private message

We are planning a family trip together to China this time ... upon some research.  Google Maps are blocked in China.  The other time when they were there, we were trying to check their photo co ordinates maybe that uses Google services?  But when we tried to track their phone using Google sign-in as they travelled around in China - that for sure didn't work.  Will probably have to use a offline map with maybe routing ability.  I do know Navmii has it, Maps.Me doesn't provide a China map for download.  Bit of a bummer cos I was planning to use Google Street View to better plan the trip of what to do and see ....... There is the way of roaming with a foreign SIM but that is expensive.  That isn't blocked at all ......

 

 

 

Not even sure if we can get a SIM b/c what I read they say they need to scan your Chinese ID Card and we don't' have that.  But then there are smaller shops available too ... Also 1 of the 3 telco's work with foreign phones.  2 of them run on China specific frequencies. 


Create new topic




News »

Freeview On Demand app launches on Sony Android TVs
Posted 6-Aug-2020 13:35


UFB hits more than one million connections
Posted 6-Aug-2020 09:42


D-Link A/NZ extends COVR Wi-Fi EasyMesh System series with new three-pack
Posted 4-Aug-2020 15:01


New Zealand software Rfider tracks coffee from Colombia all the way to New Zealand businesses
Posted 3-Aug-2020 10:35


Logitech G launches Pro X Wireless gaming headset
Posted 3-Aug-2020 10:21


Sony Alpha 7S III provides supreme imaging performance
Posted 3-Aug-2020 10:11


Sony introduces first CFexpress Type A memory card
Posted 3-Aug-2020 10:05


Marsello acquires Goody consolidating online and in-store marketing position
Posted 30-Jul-2020 16:26


Fonterra first major customer for Microsoft's New Zealand datacentre
Posted 30-Jul-2020 08:07


Everything we learnt at the IBM Cloud Forum 2020
Posted 29-Jul-2020 14:45


Dropbox launches native HelloSign workflow and data residency in Australia
Posted 29-Jul-2020 12:48


Spark launches 5G in Palmerston North
Posted 29-Jul-2020 09:50


Lenovo brings speed and smarter features to new 5G mobile gaming phone
Posted 28-Jul-2020 22:00


Withings raises $60 million to enable bridge between patients and healthcare
Posted 28-Jul-2020 21:51


QNAP integrates Catalyst Cloud Object Storage into Hybrid Backup solution
Posted 28-Jul-2020 21:40



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.


Support Geekzone »

Our community of supporters help make Geekzone possible. Click the button below to join them.

Support Geezone on PressPatron



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.