Go Back   Android Forums > Android Phones > HTC Desire

New Forums: Nexus Player | Nexus 9
test: Reply
 
LinkBack Thread Tools
Old September 22nd, 2012, 08:55 AM   #1 (permalink)
Member
Thread Author (OP)
 
Join Date: May 2010
Posts: 161
 
Device(s):
Carrier: Not Provided

Thanks: 9
Thanked 0 Times in 0 Posts
Default GPS Coverage different networks

Hi all

How dependent is the network coverage for a good GPS siginal on a smart phone (samgung SII)

Currently I am on vodafone but am thinking about switching to O2.....would like to have a good GPS track on my cycle to work hence my question.

Many thanks for your time and help.

Regards

Mike

Advertisements
Mike777 is offline  
Reply With Quote
sponsored links
Old September 22nd, 2012, 09:21 AM   #2 (permalink)
AF Contributor
 
Hadron's Avatar
 
Join Date: Aug 2010
Location: Dimension Jumping
Posts: 12,485
 
Device(s): HTC One (S-Off), HTC Desire (retired)
Carrier: Orange UK

Thanks: 2,306
Thanked 5,243 Times in 3,768 Posts
Default

Hi Mike,

The GPS part should be the same either way, as it's the same satellites.

As an experiment I just set my phone in airplane mode, stepped out into my garden and activated the GPS Status app. I got an 11 satellite lock and 3m precision in a few seconds with no network assistance. I don't know the S2, but there's no reason in principle why a phone can't work just fine as a pure GPS device without network assistance.

The bit where the network is used to aid location may in principle vary. Obviously won't work when out of cover (but as above, you should be able to use GPS without this). If the database of cell tower locations is wrong I suppose it might in principle confuse things, but as long as both networks maintain that correctly (or pass correct into to Google - I don't know how that bit works) then it should be the same on either network. I should add though that I've no experience of using either, so this is just theory.
__________________
Forum Rules & Guidelines - Android Forums FAQ
If a post helps you, use the Thanks! button.
Spam or offensive? Don't respond, report it /!\
Hadron is offline  
Reply With Quote
Old September 22nd, 2012, 03:47 PM   #3 (permalink)
Member
 
togger161's Avatar
 
Join Date: Jan 2011
Location: Birmingham UK
Posts: 430
 
Device(s): SGS2, HTC Desire
Carrier: Not Provided

Thanks: 52
Thanked 58 Times in 49 Posts
Default

The network location and GPS location are totally different, and use different technology. You can get your location from your phone network, but it isn't that accurate. I've used Google maps and it's shown my location anything up to a mile or so away. This was on 3UK. I'm currently on T-Mobile and that shows me at the end of my road, about half a mile away. This is not accurate enough for sat nav etc. I believe it looks to the mast your phone signal connected to.

Switch the GPS on and it uses satellites to triangulate your position (why you need a minimum of 3 satellites to get your position.) This is a lot more accurate, typically down to 20ft. First fix on a lot of devices usually takes a couple of minutes, but if you use the GPS every few days you will get a lock a lot quicker, sometimes in seconds. (I believe the GPS data is valid for up to 7 days. Basically use it every 7 days or less and you will be getting a hot (quick) fix, any longer and you'll get a slower "cold" fix) If you want to know more about this and why let me know and I can point you to some more detailed explanations.

You can use the GPS without a phone signal/no 3G. You will need to have the maps on your device though. I have Navigon on my phone and used it on holiday last year in parts of Devon where we had no phone signal at all (HTC Desire) and in Scotland this year (SGS2 and wife using my HTC Desire) Both worked flawlessly, easily as good as a dedicated sat nav.

In summary, the location provided by your phone company is usually good enough to see roughly where you are on Google maps (typically within a mile) and is fine for check-ins on Facebook and for returning details about local products from bar code scanning apps (Red Laser). If you need to know exactly where you are for Sat Nav, Geocaching, logging your jogging/cycling routes, GPS is a lot more accurate.

They both use different forms of technology and can be used independent of each other.
__________________
Phone : S4 i9505
Network : Three UK
togger161 is offline  
Reply With Quote
Old September 22nd, 2012, 03:55 PM   #4 (permalink)
Member
 
togger161's Avatar
 
Join Date: Jan 2011
Location: Birmingham UK
Posts: 430
 
Device(s): SGS2, HTC Desire
Carrier: Not Provided

Thanks: 52
Thanked 58 Times in 49 Posts
Default

BTW, you've started about 3 threads now asking about GPS. There are GPS issues on some devices, but Google (who developed the Andorid OS for mobile phones) have released patches. You need root access to your device in order to patch the system files with the updates. My HTC Desire was really bad on several Roms, but the patch sorted it out. My SGS2 is fine out of the box.

If you want any more info PM me.
togger161 is offline  
Reply With Quote
Reply

HTC Desire
Current Rating:
Rate this Phone:

The HTC Desire is one of the latest high end phone by HTC bringing a huge 3.7" inch high quality AMOLED screen for crystal clear viewing, powered by a 1 GHz Qualcomm Snapdragon processor and runs on, you guessed it, Android. We first heard a... Read More



Go Back   Android Forums > Android Phones > HTC Desire
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 01:18 AM.
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.