Database Users

[Q] Google Maps with GPS

hi everyone ! can anyone tell me how i can use Google Maps with Gps technology ?? when i select "Use GPS" it says "Network Unavailable"

You're connected to the Internet?

An activated GPRS, EDGE or UMTS is necessary.

sharax said:
You're connected to the Internet?
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no i'm not !
Dnst said:
An activated GPRS, EDGE or UMTS is necessary.
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Click to collapse
you mean if i want to browse maps with gps, i have to connect to the internet ??

Oh yes the maps are not on your device they are downloaded!!

Google Maps gets your location from the GPS sensor, but then has to go online to download the actual map data for that area.

so if the map of the area we are in, was downloaded befor then i think there wont be any problem ! i think it would be just like the quick gps software in diamond ! am i right ?

I think that should be a way of download the map and use it offline. Some cracker should make it easy

diogoperas said:
I think that should be a way of download the map and use it offline. Some cracker should make it easy
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hehe, i tried 5 different apps and currently use gpsVP /w cached Gmaps imgs
pretty good for a free app, altho not totally easy to set up as there is no info...
since there is no maps for japan that i know of, never tried a commercial product, then again i prefer gmaps and my brain for navigation

diogoperas said:
I think that should be a way of download the map and use it offline. Some cracker should make it easy
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Click to collapse
in the last few versions of gmaps just install it onto the storage card and then you can just save whats in the applicationdata\googlemaps folder and use that offline

Dnst said:
An activated GPRS, EDGE or UMTS is necessary.
Click to expand...
Click to collapse
Can also be Wifi.

hey everybody, first post here....
i read that i should not start new posts if theres one going already.
I got my diamond about a month ago, its an alltel cdma diamond with original ROM, no registry tweaks, pretty much stock.
the GPS is being finicky. ive tried atleast 10-15 different GPS applications (all freeware or trials) and they are alway hit or miss. sometimes i get a 6-12 sat lock in seconds, even indoors... but sometimes i cant lock on outside even after 15min or more (even if i had a lock on less then 8hrs earlier). Ive been trying to find a pattern to why it sometimes works (certain settings, maybe after a resets, quick gps, etc)
side note, i used the G-Watch app while in poland where i have no phone coverage. it worked perfectly everytime i turned it on with almost instant lockon. but back in florida every program i try sometimes works and sometimes doesnt, even if i turned the phone to airplane mode.
question 1- is this considered normal for the alltel diamond
question 2- does the software that costs money (ie tomtom) work any better/more consistently
question 3 - could there be something wrong with my phone
question 4 - any ideas how to make it more stable
thanx for the help

also, on some of the gps programs, it will say i have found up to 8 or so sats, but wont lock onto any of them...
thanx again

Using GPS without CDMA signal

Hello:
I try use the GPS of Sprint Hero in Argentina (there are no operators that use CDMA)
and I can not find the satellite signals, what I can do?
Thanks in advance

Gps will not work without a network location first. You may be able to connect to a wifi and it work, maybe.
Sent from my HERO200 using XDA App

Try to use the GPS while connected to wi fi and have not had luck. There fix something?
danaff37 said:
Gps will not work without a network location first. You may be able to connect to a wifi and it work, maybe.
Sent from my HERO200 using XDA App
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Click to collapse

pablo2m said:
Try to use the GPS while connected to wi fi and have not had luck. There fix something?
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Click to collapse
Are you using a custom ROM, or just stock 2.1?

Probably nothing you can do. The gps hardware is not powerful enough to work without a network location.
Sent from my Android for Telechips TCC8900 Evaluation Board (US) using XDA App

Today i'm using CM6 but try with the original sprint rom
stayclean said:
Are you using a custom ROM, or just stock 2.1?
Click to expand...
Click to collapse

my thoughts are...
GPS works.. but without data it has no reference.
Maps must be downloaded via some internet connection. Maybe a wifi can help u.
or
you can download a stand alone GPS map app. CoPilot is a good one, but cost $30.

Yeah, but the gps can't even find a lock without a recent network signal to tell it where to start looking. It's not a full on gps antenna.
Sent from my HERO200 using XDA App

I have been traveling around the world recently with my EVO and using the GPS to do so. It's GPS chip is no better than the Hero's I believe.
Things to keep in mind, without aGPS help, it can take these things up to 30 minutes to find your correct location. Usually it takes 4 strong signals to pinpoint it. Download GPS Status from the market and it will show you all of the satellites it is picking up as well as the strengths and you will know when you have a lock. It will also allow you to keep the phone awake and the gps active until it gets a fix. This is probably your main problem. If the phone is not actively using the gps, it turns off the chip and never gets a chance to get a fix.
You need to run GPS status preferably when you are connected to a wifi signal and outside with a clear shot of the sky. It can take anywhere from 10 seconds to 30 minutes depending on if you are on a wifi connection, how far away you are from the last known lock stored in the chip (GPS Status will display this for you) and also how far from the equator you are, etc. If you are very far south in argentina it can be a LOT more difficult GPS to work... I noticed my GPS had waaay more trouble up in sweden than it did down in central europe.
Also, Download mapdroyd and get the maps for the area you are in. It works pretty well for a free locally stored map app. GPS Status also allows you to add pins/labels to gps coordinates and then do a radar type guidance back to them. Between these two tools and now knowing how to connect your phone, you should never get lost again, providing your battery does not die. Luckily I brought 4 extra batteries with me!

about GPS works

I have an easy question about GPS, I am using Vibrant without network plan. So I don't know if I can use GPS with out any wifi or 3g? I am using the BV 1.3.1 now.. If that will work, how can I set up?

GPS uses military run satellites to determine you location. The network or data transfer is irreverent. Your GPS will work without network connection.
Now lets say you try to navigate to a location with Google maps. This will not work, although the phone will know your location it can not use the network to DL the maps nor calculate your route. If you use a nav app that store a maps on your SD card, then you'll be fine

SykesAT said:
GPS uses military run satellites to determine you location. The network or data transfer is irreverent. Your GPS will work without network connection.
Now lets say you try to navigate to a location with Google maps. This will not work, although the phone will know your location it can not use the network to DL the maps nor calculate your route. If you use a nav app that store a maps on your SD card, then you'll be fine
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+1 yup plus it will be slower

oka1 said:
+1 yup plus it will be slower
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It will be slower? The GPS navigate will be slower or the phone will be slower? much slower?

oka1 said:
+1 yup plus it will be slower
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Is there any nav app that we can't download free and store the maps in SD so that can navigate without network?

oka1 said:
+1 yup plus it will be slower
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pxc668 said:
It will be slower? The GPS navigate will be slower or the phone will be slower? much slower?
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I don't see how the phone would be slower, in any regard. It would not affect the phones processing speed, nor would the gps run slower. The only thing that could be slower is finding your location from a cold start, using network location can speed this, but imo it's irrelevant. Network location is too inaccurate for navigation.
There are some apps which store maps, but none that are free. Maybe someone else knows of one.

In my experience, GPS lock can be considerably slower without the network. The AGPS works by querying the network to get supplemental information like precise time and maybe ephemeris data (precise sat location) which can make a huge difference in acquiring lock. The phone is capable of acquiring lock without this network aid, but locks can take minutes, and accurate locks can take many minutes.
Of course, the other caveats about requiring off-line maps etc for navigation functions also apply.

I don't have a data plan either but my gps works just fine. It locks onto sats in about 10 sec.
http://forum.xda-developers.com/showthread.php?p=10488647
thats open source map app where u can drop locations to go turn by turn (initially the maps load over wifi, but u can choose to save them and save them according to the resolution. I live in Atlanta so i only saved the GA portion with a decent resolution, which is nice that i dont have to worry about downloading states ill never need).
i personally use copilot live more (about 1gb for USA maps with poi)
i forgot the price, but it is 100% worth it (almost better than my in car navi)
Running bionix btw if that helps with gps lockon timings
and dont forget to get apn droid from the app store to make sure it disables all cellular network data. only downside is that if you want mms then u have to turn it back on reboot and then download the mms then turn it off again, but i dont get many mms anyway so its ok.

Get CoPilot Live USA.
Its $5 on the market and it preloads the maps for the country on your phone. Works WITHOUT data and the interface is SLICK. Full 3D navigation with really good voice turn by turn.
One of the best purchases I ever made. Hope it helps you too
PS: Maps get updated about every month so they are always current as far as road names and points of interest. Note that since it isn't using any data and data triangulation, if it is the first time you use it after a phone reboot it will take up to 3-4 minutes to lock on. This is normal as it is the same if you try any 3rd party GPS receiver navigation system. Once you've used it once since the phone has booted up, lockon time will be under a minute.

GPS lock time problem

Hi,When I use my phone for finding my location without using data connectivity - without relying on A-GPS so my phone finds my location after a lot of time or sometimes google maps can't find my location.
How can I solve this?
Thanks.

After day or so it won't get fix at all. Samsung just did something wrong I'm afraid. Looks like the GPS in SG2 NEEDS data to work. I found the hard way on my trip to Japan. I know no solution.

So I cant change my gps settings?
Sent from my GT-I9100 using XDA App

GPS in the S2 is weird. Some days it locks in seconds other times it takes forever. I never use A-GPS.
Today I couldn't get it to lock but last night it was instant. So I restored a CWM backup from last night, rebooted and it locked instantly.
I played around with MIUI for a couple of days and found lock time much better than stock or custom rom.
Also, changing server with fasterfix makes no difference when its having problems locking.
I just don't get it.
Sent from my GT-I9100 using XDA Premium App

GPS Aids in Market. It will take a bit of time on first lock but from then it will be fast.

sxi200 said:
GPS in the S2 is weird. Some days it locks in seconds other times it takes forever. I never use A-GPS.
Today I couldn't get it to lock but last night it was instant. So I restored a CWM backup from last night, rebooted and it locked instantly.
I played around with MIUI for a couple of days and found lock time much better than stock or custom rom.
Also, changing server with fasterfix makes no difference when its having problems locking.
I just don't get it.
Sent from my GT-I9100 using XDA Premium App
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How do you 'never use AGPS' ? Btw. my problem is not time of the lock. But the fact, that without network, I don't get fix AT ALL. With network AGPS reset helps (many apps can do that). But without network GPS works only for some time (AGPS data still valid). After that you just won't get fix. It even looks like wifi connection won't help, it has to be mobile network.

It's because of crappy gps reciever or it can be improved by another rom?
Thanks
Sent from my GT-I9100 using XDA App

It seems the problem is that GPS is in mode, where it simply relies on AGPS. In older ROMs there was app called LBSTestMode where you could change the mode to stand alone, or just AGPS based. This application is not in newer ROMs, so it cannot be switched. It clearly is just a software thing. Except it looks that there is no solution which does not involve flashing roms and/or rooting.

Dr.Sid said:
How do you 'never use AGPS' ? Btw. my problem is not time of the lock. But the fact, that without network, I don't get fix AT ALL. With network AGPS reset helps (many apps can do that). But without network GPS works only for some time (AGPS data still valid). After that you just won't get fix. It even looks like wifi connection won't help, it has to be mobile network.
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Click to collapse
Yeah I never use it. I don't tick 'use wireless networks' at all. To me that's fake GPS.
Since my last post, GPS has been perfect. Am able to lock up to 11 satellites sitting on the couch. On average it takes about 10 seconds to lock. Tested it at least 20 times today.
But who knows what will happen tomorrow!!!
Man, if you can only get a lock using wireless networks then I think your GPS might be stuffed.
Sent from my GT-I9100 using XDA Premium App

sxi200 said:
Yeah I never use it. I don't tick 'use wireless networks' at all. To me that's fake GPS.
Since my last post, GPS has been perfect. Am able to lock up to 11 satellites sitting on the couch. On average it takes about 10 seconds to lock. Tested it at least 20 times today.
But who knows what will happen tomorrow!!!
Man, if you can only get a lock using wireless networks then I think your GPS might be stuffed.
Sent from my GT-I9100 using XDA Premium App
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That does not mean you don't use AGPS. AGPS is method, where data about GPS satellites are not downloaded from those satellites via GPS receiver, but rather from server via. mobile network. So I'm afraid you do use AGPS, unless you disable mobile networking (and wait about day for current data to become obsolete).

One thing I've noticed is that when I run Z-DeviceTest and bring up the GPS status display, it shows that none of the satellites have almanac data, and very rarely have ephemeris data. If that's accurate, that would suggest that if you've turned off AGPS and mobile networking, you could have some trouble.

3waygeek said:
One thing I've noticed is that when I run Z-DeviceTest and bring up the GPS status display, it shows that none of the satellites have almanac data, and very rarely have ephemeris data. If that's accurate, that would suggest that if you've turned off AGPS and mobile networking, you could have some trouble.
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Nice find. First app I know which shows this. Now I can test if that almanac is downloading via GPS satellites or not.

Dr.Sid said:
That does not mean you don't use AGPS. AGPS is method, where data about GPS satellites are not downloaded from those satellites via GPS receiver, but rather from server via. mobile network. So I'm afraid you do use AGPS, unless you disable mobile networking (and wait about day for current data to become obsolete).
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Ok. So does that would mean it's impossible to get a GPS lock without data enabled? Or just harder to?
Maybe I shouldn't have mentioned AGPS, but instead wireless networks which show your position even though GPS is not locked.
Sent from my GT-I9100 using XDA Premium App

sxi200 said:
Ok. So does that would mean it's impossible to get a GPS lock without data enabled? Or just harder to?
Maybe I shouldn't have mentioned AGPS, but instead wireless networks which show your position even though GPS is not locked.
Sent from my GT-I9100 using XDA Premium App
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It seems it may vary with ROM, and it is possible to switch it, at least older ROMs contain service menu module (LbsTestMode) to switch it. But my SG2 seems to be unable to get a fix without network. It simply does not even try do download Almanac or Ephemerides data from the satellites.
Also for AGPS, mobile network must be used, not WiFi. As I understand it, those AGPS server names are virtual, and network provider redirects them based on location .. which is not possible via WiFi.
I wonder WHY there is such option at all. Do mobile network providers want us to be unable to get a fix without them ?

Dr.Sid said:
It seems it may vary with ROM, and it is possible to switch it, at least older ROMs contain service menu module (LbsTestMode) to switch it. But my SG2 seems to be unable to get a fix without network. It simply does not even try do download Almanac or Ephemerides data from the satellites.
Also for AGPS, mobile network must be used, not WiFi. As I understand it, those AGPS server names are virtual, and network provider redirects them based on location .. which is not possible via WiFi.
I wonder WHY there is such option at all. Do mobile network providers want us to be unable to get a fix without them ?
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Hey Dr, I think you have diagnosed my problem
Every so often I turn off data and use only wifi. One day my GPS locks in seconds then the next it takes forever.
So I have now tested it a couple of times over the last couple of days, when I can't get a lock I turn off wifi and turn on data. All of a sudden GPS locks again. Interesting!!
Hopefully that is it. Will test again the next time it won't lock.
Sent from my GT-I9100 using XDA Premium App

Ha ! Breakthrough. I could get a fix without network ! But ..
I used newer version of 'GPS Status' app. It shows state of unconnected satellites with gray/blue/yellow based on how much data it has - none/almanac/ephemerides. So you can see if there is some progress or not.
So I disabled network (both wifi and mobile), disabled location from mobile network, left just GPS on .. run GPS status and used 'Reset AGPS'.
The connection has few 'phases':
1) you get signals from satellites .. you see it in power meter .. all are gray .. and their dots on the 'sky' view are all in the N. Sure, GPS does not know where the satellites are, and does not know where you are .. so it can't know where on the 'sky' they should show.
2) Some signals/dots turn blue. That means you have almanac data. Rough position of all satellites, which is transmitted by all satellites. That already means your GPS receiver was used to download some data from the satellites. Based on this, GPS can tell very roughly where you are, and will paint dots on the skyview.
3) Some signals/dots turn yellow. That means you successfully downloaded ephemerides data from that satellite, and it can be used in fix. Have enough of them, and you are done.
4) Some signals/dots turn green - you have fix. The error will get better over time as more satellites are used.
I took me over 5 minutes .. but thanks to this tool I could see I'm indeed receiving some data and there is some progress. Also it only worked outside, under open skies. I tried that in a car, in a bus, in a train .. after 10 minutes I did not get over phase 1. With AGPS I get fix in all such situations in few seconds.
It just looks like the data decoding module for almanac/ephemerides is not the same as for the time (which is used in fix itself). While time channel is quite sensitive and fine, data channel seems to have troubles with even slightest disturbances.
Still I'm happy I made it work in the end !
Btw. the fact that AGPS does not work over WiFi still holds.

ayosopov said:
Hi,When I use my phone for finding my location without using data connectivity - without relying on A-GPS so my phone finds my location after a lot of time or sometimes google maps can't find my location.
How can I solve this?
Thanks.
Click to expand...
Click to collapse
try fasterfix from market

I rarely have the data connection on (just to save battery) and WiFi is only on where I know I have a known connection - thus it is off when outside.
I put on the GPS then immediately run Sygic satnav program. I will have a fix normally within 30 seconds and a worst case of about a minute (that I can remember).
I have just tried switching off and on my phone, putting on the GPS (from the Pull down menu) and run Sygic. From switching on the GPS, I had a lock in about a minute.
KI3 Stock ROM

fred_up said:
I rarely have the data connection on (just to save battery) and WiFi is only on where I know I have a known connection - thus it is off when outside.
I put on the GPS then immediately run Sygic satnav program. I will have a fix normally within 30 seconds and a worst case of about a minute (that I can remember).
I have just tried switching off and on my phone, putting on the GPS (from the Pull down menu) and run Sygic. From switching on the GPS, I had a lock in about a minute.
KI3 Stock ROM
Click to expand...
Click to collapse
Could you try that with AGPS manually reset ? I recommend 'GPS Status' tool to do it, it's in 'tools' menu.

GPS lock time seems much improved in KJ4 firmware for me (i'm on orange 2.3.5)
all three DOP values in GPS Status now show figures (instead of infinity for two of them), and i'm getting reported accuracies of around 5 metres, instead of 14 - 20 metres on the older firmware.

Offline navigation using the nexus 10

Suppose I want to use my nexus 10 to navigate a trip from Boston to New York... A clever guy might say 'I can just preload the map'. But that won't work because when I try and load that much map it says to me 'not enough storage, map too big'. The thing is I have nearly 30 gigs free on this thing and it looks like it can't get much beyond a few hundred megs of map storage. Is there some way to kick up the storable size of a map selection? I've not found any setting in maps that'll let me save even the state of tiny Rhode Island! Or will this thing save enough map if I set up navigation before breaking the WiFi connection that it'll just work?
Sent from my Nexus 10 using xda app-developers app

Doctor Dedroid said:
Suppose I want to use my nexus 10 to navigate a trip from Boston to New York... A clever guy might say 'I can just preload the map'. But that won't work because when I try and load that much map it says to me 'not enough storage, map too big'. The thing is I have nearly 30 gigs free on this thing and it looks like it can't get much beyond a few hundred megs of map storage. Is there some way to kick up the storable size of a map selection? I've not found any setting in maps that'll let me save even the state of tiny Rhode Island! Or will this thing save enough map if I set up navigation before breaking the WiFi connection that it'll just work?
Sent from my Nexus 10 using xda app-developers app
Click to expand...
Click to collapse
in google maps use the "make available offline" and break the route into separate slightly overlapping squares instead of one large area which will be too big for it. if you just try to save new york to boston in one large square you are getting tons of extra area you dont need and it wont work. if you break it down i think it will let you save 6 or 7 smaller offline maps. ive been able to use it offline between cincinnati and washington dc doing this and it worked fine.
not sure if there is a way to increase the storage limit it sets but it would be nice.

Best suggestion would be Dave's, Google Maps does not allow making big areas available as offline maps.
Btw doesn't the Nexus 10 have a GPS? I thought this GPS would work without the need of a data connection since the Nexus 10 does not support data connection but WiFi only, could someone please confirm or deny this? If you do need a wireless internet connection, then I would say it's stupid to have a GPS built-in if I can just use the network location future for map use when I'm connected to the internet.

daLareid said:
Best suggestion would be Dave's, Google Maps does not allow making big areas available as offline maps.
Btw doesn't the Nexus 10 have a GPS? I thought this GPS would work without the need of a data connection since the Nexus 10 does not support data connection but WiFi only, could someone please confirm or deny this? If you do need a wireless internet connection, then I would say it's stupid to have a GPS built-in if I can just use the network location future for map use when I'm connected to the internet.
Click to expand...
Click to collapse
First off, thanks to Dave for the suggestion. I wasn't making the connection... Thought I needed one saved map. The Nexus 10 does have GPS... But when using my phone for navigation, doesn't it download the maps as it needs them? If this is so, then once you broke the wireless connection , the Nexus 10 wouldn't be able to load maps as needed. I was under the assumption that I would have to preload the maps somehow which of course, Google Maps can do. If this device is smart enough to load all the bits of map it needs for whatever route it calculates... Then all of this discussion is mood anyway. Of course if you set up your phone for wifi hotspot and you wouldn't need to preload the maps it seems to me... that is of course assuming that you prefer to use the Nexus 10 for navigation rather than your phone.
Sent from my Nexus 10 using xda app-developers app

Doctor Dedroid said:
First off, thanks to Dave for the suggestion. I wasn't making the connection... Thought I needed one saved map. The Nexus 10 does have GPS... But when using my phone for navigation, doesn't it download the maps as it needs them? If this is so, then once you broke the wireless connection , the Nexus 10 wouldn't be able to load maps as needed. I was under the assumption that I would have to preload the maps somehow which of course, Google Maps can do. If this device is smart enough to load all the bits of map it needs for whatever route it calculates... Then all of this discussion is mood anyway. Of course if you set up your phone for wifi hotspot and you wouldn't need to preload the maps it seems to me... that is of course assuming that you prefer to use the Nexus 10 for navigation rather than your phone.
Sent from my Nexus 10 using xda app-developers app
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Click to collapse
So you can confirm the GPS feature is pretty much useless? that's pretty much what I would be meaning to use it for, Navigation, but like I said before if it only works with a working internet connection then it truly is pointless, why would I bother tethering my mobile's data connection to enable the Nexus 10 when I can instead just use my mobile for Navigation. Has anybody else tried Navigation via GPS only on Nexus 10?

daLareid said:
So you can confirm the GPS feature is pretty much useless? that's pretty much what I would be meaning to use it for, Navigation, but like I said before if it only works with a working internet connection then it truly is pointless, why would I bother tethering my mobile's data connection to enable the Nexus 10 when I can instead just use my mobile for Navigation. Has anybody else tried Navigation via GPS only on Nexus 10?
Click to expand...
Click to collapse
Sent from my Nexus 10 using xda app-developers app
I simply have not had the opportunity to try using it for navigation yet. I have several apps that do need to have a good position in order for them to function correctly. In particular the the app that needs an accurate as possible location is called sattrack.
I believe if you pre load maps prior to leaving on your trip then the position will be quite accurate as provided by the GPS. I believe the only issue that I'm bringing up is whether or not the maps preload automatically prior to taking the Nexus 10 on the road.
Yes tethering is perhaps somewhat superfluous... However if you want a bigger display it seems like one way to do it.

Copilot Live is cheap, and works very well ...

Doctor Dedroid said:
Sent from my Nexus 10 using xda app-developers app
I simply have not had the opportunity to try using it for navigation yet. I have several apps that do need to have a good position in order for them to function correctly. In particular the the app that needs an accurate as possible location is called sattrack.
I believe if you pre load maps prior to leaving on your trip then the position will be quite accurate as provided by the GPS. I believe the only issue that I'm bringing up is whether or not the maps preload automatically prior to taking the Nexus 10 on the road.
Yes tethering is perhaps somewhat superfluous... However if you want a bigger display it seems like one way to do it.
Click to expand...
Click to collapse
I've tried it and it works. Download the mapping data of the areas you are traveling and it will navigate offline.
Sent from my Nexus 4 using xda app-developers app

Doctor Dedroid said:
First off, thanks to Dave for the suggestion. I wasn't making the connection... Thought I needed one saved map. The Nexus 10 does have GPS... But when using my phone for navigation, doesn't it download the maps as it needs them? If this is so, then once you broke the wireless connection , the Nexus 10 wouldn't be able to load maps as needed. I was under the assumption that I would have to preload the maps somehow which of course, Google Maps can do. If this device is smart enough to load all the bits of map it needs for whatever route it calculates... Then all of this discussion is mood anyway. Of course if you set up your phone for wifi hotspot and you wouldn't need to preload the maps it seems to me... that is of course assuming that you prefer to use the Nexus 10 for navigation rather than your phone.
Sent from my Nexus 10 using xda app-developers app
Click to expand...
Click to collapse
I dont think it will save the maps along the route if you have a connection initially but it might.
On both my phone and tablet i usually have the area i normally am traveling within always saved offline- it loads faster and if you lose cell service it still works. If i break it into seperate maps i easily can save a 100+ mile radius from home which is probably 99% of my normal travel. If i am headed on a long trip i just delete a few local files and i save along the route and im good to go. If you save the maps offline make sure you are on wifi and not on cell connection or tethering- only takes a few minutes on wifi but files are a little big to do over cell.
to the questions others had about the gps. its very accurate and quick on the nexus 10. in addition to the navigation i have occasionally used some other apps to map some project sites using it and also to view topo and other maps.

Has anybody tested the device with offline programs like iGO or Sygic (with pre-downloaded maps)?

Hmm... I've tried downloading and using offline maps for trips and I found that it wasn't reliable... when I lost connection the GPS couldn't track my location. However, I will mention that I did not make the entire distance from my starting location to destination available offline... I assumed once I was in the area that I downloaded it would automatically pinpoint my location. Maybe I was wrong to think that?