[Q] Sat Nav abroad - Galaxy S II Q&A, Help & Troubleshooting

Hey,
I live in the uk and next month i am going to spain for two weeks, i was planning on using my sgs2 as my sat nav using google maps,
Now if i do this will i need to use the internet to get the map or will it all be done by the gps?
if so is there a good sat nav app i can get that will allow me to only use the gps?
Thanks

GPS reads satellites it cannot download anything .
Internet is required for Google maps but in settings you can turn on cach and labs prefetch . That may be used to download some of the map before you go .
Mobile data abroad can be very very very expensive make sure you dont end up with a £1000 plus bill from the network .
jje

So if i get another nav what has all the Spanish map i should be ok?
There is a limit to a £40 on o2.
Will try and download a sat Nav annoyed really as my old Sony Satio had garmin.
Sent from my GT-I9100 using XDA App

Buy Sygic.

Will have a look at that, also looking at navigon

For a quick trip you could also use Navit (org.navitproject.navit) and download the map yourself (Openstreetmap).
Not as fancy as the buyware but enough for basic navigation.
If you only need the maps and no routing then you could also have a look at Oruxmaps (com.orux.oruxmaps). It can download maps from Google and other sources.

Related

is there any GPS software for the X10 ?? (using internal GPS only)

is there any GPS software for the X10 ?? (using internal GPS only)
i sow in GSMARENA that the X10 have:
•No free GPS navigation solution
whats that mean ??
That means that the X10 doesn't come with a free navigation solution. But Google Maps works like a charm if you know how to use it. If you want to pay for a navigation program there's always CoPilot!
how come if he does have an internal GPS ?
will it be posible when we have a root accese? or never free GPS in this phone ??
I'm pretty sure, if you search the market you will find some free alternatives.
Not as good as the paid alternatives but it should be something free there.
amir84 said:
how come if he does have an internal GPS ?
will it be posible when we have a root accese? or never free GPS in this phone ??
Click to expand...
Click to collapse
I'm not aware of any external GPS-solutions for any mobile phone since the SE P1. And why? The internal GPS works just fine! But if you don't have a flatrate data plan for your phone, sure, Google Maps isn't useful. But honestly, who doesn't have that for this kind of phone?
Check out the nav n go my way 2009 post in x10 apps and themes. Posted a link to download motonav. Works perfect for mine!
Sent from my X10i using the XDA mobile application powered by Tapatalk
CoPilot is very good and it's just a few bucks ..
the problem with a data plan here in europe is, that it is very expensive as soon as you are in a neighbor-country.
boo6 said:
CoPilot os very good an it's just a few bucks ..
the problem with a data plan here in europe is, that it is very expensive as soon as you are in a neighbor-country.
Click to expand...
Click to collapse
CoPilot won't use any data. Its GPS not GPRS, no data is involved
Sorry, that's what I wanted to say ..
Sometimes when you're in a foreign country, no data plan can help you - so you'll need offline navigation. And copilot is an inexpensive solution for this.
bring the topic alive...
i'm from brazil and we have problems with data plan.. and i need gps... for sure that have navigation without use the data ? no gprs 2g/3g, at all ?
my diamond are dying i will probably buy the x10, great screen it have
thx.. and sorry the bad english
I use "Locus" and "GPS status", Locus provides offline maps and can record routes and stuff, but haven't checked if if it can suggest routes, GPS status, shows compas, altitude, velocity and stuff. Also I heard that google maps now has offline maps and it shows your current location
For what I understand he's asking for a navigation software that doesn't requires data access, one that can be used offline, not a free software.
I use Ndrive, works like a charm, but the map from Chile has some flaws, some little cities have only the main street, but nothing too bad when in big cities.
Also iGo is a great alternative, but a little slower than Ndrive.
Both have guided navigation without depending on data.
Navigon Select works great.it uses the phones gps without having to be connected to the internet since it stores the maps on your sd card.
Sent from....
I read that google maps will have offline features in the near future.

[Q] Navigation software

Hi all,
Well, I am getting a bike mount for my Streak this weekend.
I roam about a lot in the city on my bike now! ( and I get lost a lot too! new city .. )
so, I was thinking.
So whats one good Navigation software that has:
Voice navigation (optional)
Turn by turn directions (required in text atleast!)
Offline maps (must!)
<GPS assist is must! for the accuracy..>
City road maps (e.g. Bangalore, India)​
Please suggest.
(Offline maps to ensure min battery usage..)
Thanks,
Sony.
Google Maps or NDrive
Google maps navigation supports all of the features you asked but the offline maps download automatically from a round you and it caches them so you can't always be shure that they are always there.
But if you defiantly need offline use NDrive, it is not for bikes but it is good and quite cheap and very fast, I use it all the time with my streak
Just checked..
Just checked!
Brut maps is what I need, but, again.. I think it has difference from the legal terms from Google maps..
Ndrive.. hmm, I think, its not good in India.
is there a trial version of it?
Thanks for that..
any other softwares/maps stuff?
care,
Sony.
P.S. stevepork: there you go.. first thanks
Not sure if CoPilot is in your area, but it works quite well here in north america. I attempted to use it in Mexico, and the results were less than stellar.
A free option is Navit, which can work alongside with Google Maps, so you can get a starting and end point that works. Navit's maps are all on SD. It's a work in progress but does include TTS.
besony said:
Hi all,
Well, I am getting a bike mount for my Streak this weekend.
I roam about a lot in the city on my bike now! ( and I get lost a lot too! new city .. )
so, I was thinking.
So whats one good Navigation software that has:
Voice navigation (optional)
Turn by turn directions (required in text atleast!)
Offline maps (must!)
<GPS assist is must! for the accuracy..>
City road maps (e.g. Bangalore, India)​
Please suggest.
(Offline maps to ensure min battery usage..)
Thanks,
Sony.
Click to expand...
Click to collapse
if u hd bought steak frm india u shd get Map My India licence free with dell streak...
if wldnt u can buy it..juss do some google
and 1 more thing whr do u got bike mount ?
Sent from my Dell Streak using XDA App
SYGIC MOBILE MAPS FOR INDIA is al you are going to need.
Suggest that you have a look at this web site:
http://mobile.jack-frost.co.uk/android_sat_nav_apps.php
It has very good reviews of all the different (on-line and off-line) navigation applications that are available on Android.
(In the UK, I am using NDrive quite happily, although it's not as good as TomTom under WM6. I wish that TomTom would produce an Android version.)
Navigon Select
I was installing Navigon Select
and it works Perfect. Actually i use 3.5.4 with 3D Maps. I got fully Europe and USA maps also available.
I like it very much

Tomtom for Android

Hi All,
Anyone aware if or when there will be a Tomtom app for android devices?
Cheers, markski
dont think TomTom has its own app, but there are enouf gps apps that are great
manmad said:
dont think TomTom has its own app, but there are enouf gps apps that are great
Click to expand...
Click to collapse
Yes, CoPilot and Sygic are good enough to compete with TomTom.
Copilot and Sygic are not true alternatives to TomTom
maddler said:
Yes, CoPilot and Sygic are good enough to compete with TomTom.
Click to expand...
Click to collapse
Could you please give examples on how does Copilot and Sygic compete with TomTom ? I have tried both and I still keep looking forward a TomTom on Android.
Starting with Sygic:
It was crashing so much on my Galaxy S2 during the trial that I didn't need to bother to buy it for further testing.
Copilot Live Premium was the best for Android and I actually bough it.
Among the many interesting features, Copilot allows you find alternative routes according to the traffic information (paid service but worth it). The most unique feature that I couldn't find in any other Android navigation software was the "Drag the route or destination to fine-tune your itinerary" where you can adjust the route like in the Google maps on your desktop, defining waypoints to avoid typical congestion points like road works or temporarily closed roads.
Overall Copilot is nice but there are some serious TomTom features missing like:
-TomTom HD Traffic
-Map Share technology (continuous TomTom and User map fixes). This is a serious missing feature.
TomTom is very basic in compared with other competitors but it is very stable.
they are working on release for android. you may refer from this link... last year's news anyway...
i stopped using my tomtom over 6 months ago and now use google maps with the pocketgps speed camera app, no need for tomtom
Sent using TCP/IP
I use Sygic since some months nearly daily on my SGS2 (2.3.6) - since the last updates it is very stable....
OnOffPT said:
....
Starting with Sygic:
It was crashing so much on my Galaxy S2 during the trial that I didn't need to bother to buy it for further testing.
.....
Click to expand...
Click to collapse
Just use igo. New maps are on the net everywhere
Sent from my Legend using XDA App
maddler said:
Yes, CoPilot and Sygic are good enough to compete with TomTom.
Click to expand...
Click to collapse
Not even near by
Sygic and igo
I have both Sygic and igo on my Samsung (incase one crashes in the middle of nowhere!) and find both excellent, but prefer Sygic although its heavier on system resources. (Sygic is closest to tom tom since it actually uses tom tom maps!)
I´m not a big fan of TomTom, but i had it one my Winmo and my iPhone and i can compare it to Sygic, iGo(Winmo) and Copilot.
TomTom misses some important things, like giving you proper information where exectly you have to go (street name, direccion).
BUT: Where i live, it´s the only navigation system, google maps/navigation included that finds the best routes. All others come with crappy results and Sygic and Navigon are mad.
How i see if TomTom works by loading maps from a storage device (sdcard) and Google maps uses ur internet to download up to date maps from Google servers.
So if they it's a new highway TomTom would not see it till you update the maps on your own while it auto does it for Google maps...
Im not sure about the other to.. Copiloet is not free and idk how it works its between 9.99 and 52bucks
Sent from my VS910 4G using xda premium
Pretty sure there was some deal with TomTom and apple if I remember correctly... can't think of where I read that though
I hope to see it but have given up waiting
Sent from my GT-I9100 using Tapatalk 2
Google Maps isn't always up to date. Still yet to see the new roads in my area which a new housing estate was built on two years ago.
edit: just checked Bing's maps and they have the new roads mapped
Coming from WinMobile to Android, I'm also waiting for TomTom.
Google Maps? No way. Not everywhere you go, here in Canada, has good cell phone reception. Don't mention data plans are expensive.
I have tried Sygic or Navigon. Both have problem in their stability and navigation engines. I won't trust either when driving in cities with lots of twists and turns.
I'm using IGo. So far, I like it the most and it's my own navig. device. Stable, and accurate directions. Easy to use like TomTom. It's even better in address search given their intelligent keyboard input eliminating those letters/numbers not found in the neighborhood involved.
TomTom is the best in that it's stable, accurate, no-nonsense, clean and intuitive interface.
My 2 cents.
motodroidfreak said:
How i see if TomTom works by loading maps from a storage device (sdcard) and Google maps uses ur internet to download up to date maps from Google servers.
So if they it's a new highway TomTom would not see it till you update the maps on your own while it auto does it for Google maps...
Im not sure about the other to.. Copiloet is not free and idk how it works its between 9.99 and 52bucks
Sent from my VS910 4G using xda premium
Click to expand...
Click to collapse
Google Maps lags up to several years behind Tomtom PNA's.
Tomtom uses TeleAtlas maps, which it owns.
Bing Maps uses NAVTEQ.
Two different companies providing different maps at different intervals.
Waze and Navigon are both excellent.
No one uses Ndrive??
I use
Sent from my SK17i using xda premium
Apart from Google Maps, is there any other free GPS on Android?

[Q] Best "offline" alternative to Google Maps/Nav

I am planning on using my Prime in the car and would like to know what is the best "offline" alternative to Google Navigation. I have heard about Sygic but do not have personal experience with it.
Any suggestion?
ajamils said:
I am planning on using my Prime in the car and would like to know what is the best "offline" alternative to Google Navigation. I have heard about Sygic but do not have personal experience with it.
Any suggestion?
Click to expand...
Click to collapse
You are able to download the Google maps for offline use, have you tried doing that with your tablet? All it should need after download is GPS...
omac_ranger said:
You are able to download the Google maps for offline use, have you tried doing that with your tablet? All it should need after download is GPS...
Click to expand...
Click to collapse
Well, it's not that simple actually. You can't download entire maps. You can pre-cache 10 square mile areas around locations.
Works well if you know where you're going .
omac_ranger said:
You are able to download the Google maps for offline use, have you tried doing that with your tablet? All it should need after download is GPS...
Click to expand...
Click to collapse
Sorry, I wasn't aware of that. How do I do that? All I see is an option to cache map area. How can I cache the whole USA map ?
try Orux maps from the market, its an open source alternative and as far as I am aware you can create maps of any size for offline use. And its free (or donation!).
ajamils said:
I am planning on using my Prime in the car and would like to know what is the best "offline" alternative to Google Navigation. I have heard about Sygic but do not have personal experience with it.
Any suggestion?
Click to expand...
Click to collapse
Have you looked into the new additions to Google Maps? I think they're increasing the offline capabilities (according to their talk yesterday or the day before).
http://www.androidcentral.com/google-maps-android-getting-offline-access
Although google maps is excellent and the new features are needed, orux maps includes google maps within along with just about every other map source available.
I havent heard of any apps that do offline route planning and navigation though, thats a different story.
Oruxmaps looks good but I don't think it does what I'm looking for. I need complete "turn by turn" navigation offline (just like car navigation ).
seeknom said:
Well, it's not that simple actually. You can't download entire maps. You can pre-cache 10 square mile areas around locations.
Works well if you know where you're going .
Click to expand...
Click to collapse
I was assuming he knew where he was going Haha
Sygic seems to do everything that I want but I would like to get some opinions about it before I spend a good chunk of change on it
Maps Stored on the Phone
to save your data for more important stuff.
Click to expand...
Click to collapse
http://www.sygic.com/en/android
sygic
I bought sygic. There's a free time-limited market d/l and my USA upgrade was $20. I've used it on one trip and it was very a functional turn-by-turn experience. Maps are by Tom-Tom.
i wish you could cache more than 10 square miles in google maps... 10 just never seems like enough!
Downloaded the trial version of Sygic and took it for a spin. Without the GPS dongle I lost GPS connection randomly but with the dongle I was able to complete a 10 mile journey with Voice guidance without any issue.
ajamils said:
I am planning on using my Prime in the car and would like to know what is the best "offline" alternative to Google Navigation. I have heard about Sygic but do not have personal experience with it.
Any suggestion?
Click to expand...
Click to collapse
Well, SYGIC is great. Me and a collegue both tested NAVIGON and SYGIC and SYGIC is by far the winner!
Google Maps "offline" is not recommendable. You only will download a 10x10 tile. Not more!
Google announced they will be adding full offline support (not just a 10x10 tile), but it's not out yet.
handi1948 said:
Well, SYGIC is great. Me and a collegue both tested NAVIGON and SYGIC and SYGIC is by far the winner!
Google Maps "offline" is not recommendable. You only will download a 10x10 tile. Not more!
Click to expand...
Click to collapse
ZANavi for android.
It's a fork from NAVIT. Free, using free Openstreetmaps, you can download entire countries, or even the whole world lol. There is a possibility to donwload only a limited region on navit's website (google it).
Not as sexy as paid versions but it does the job.
And people speaking about google maps please provide correct info. Offline maps in it is only an anounce, with no ETA.
I use GoPilot Live Pro and like it. I think they have a free version you can try, but eventually, you will want to go to the PRO version. If you find a map error, you can submit a correction to them and they will fix it. In addition to that, I also run WAZE...it's an online map service, but has the best info on Police/traffic congestion/accidents because it's totally based on user reporting. I don't know why, but their routing is attrocious. I use CoPilot for my directions, and check in on Waze to check the road conditions ahead. To use Waze, I just tether my phone to the Prime.
Bob
I haven't really used it myself for navigation, but Osmand is superb for viewing maps and tracking. It is easy to download vector maps for each country from within the app and there is a wide variety of online maps. The navigation is provided by Cloud made, YOURS, OpenRouteService, or the offline option.
I've tried Navit, and it works, but the UI is disgusting.
yeah try ZANavi. its free, its offline.
and if you find the time help to translate:
https://translations.launchpad.net/zanavi/navit-orig-import/+pots/navit
https://translations.launchpad.net/zanavi/trunk/+pots/zanavi

GPS navigation: Awesome but major design flaw!

I absolutely love, love, love the Google satellite view in the Navigational GPS app. The whole app really is awesome. I'll probably never use my Tomtom again.
BUT! Unlike my Tomtom which can calculate a set of directions locally on the device the S4 appears to have Google do the calculation on their servers and transmit the info via Internet connection. That's a real problem when you're in an area that has poor service. Navigation becomes totally nonfunctional.
The GPS navigation will work through an area of no service if you start in an area with service so the app can download a set of directions. The problems come if you need to start your journey in an area with no service, or do like I did and exit the navigation app to do other things like make a phone call from a backwoods gas station. When I tried to restart the navigation app it kept waiting to download the directions set from google which wasn't going to happen out there. Lucky for me I remembered enough to get me back to an area with 3G where the service restored functionality to the navigation app. Lesson learned.
0reo said:
I absolutely love, love, love the Google satellite view in the Navigational GPS app. The whole app really is awesome. I'll probably never use my Tomtom again.
BUT! Unlike my Tomtom which can calculate a set of directions locally on the device the S4 appears to have Google do the calculation on their servers and transmit the info via Internet connection. That's a real problem when you're in an area that has poor service. Navigation becomes totally nonfunctional.
The GPS navigation will work through an area of no service if you start in an area with service so the app can download a set of directions. The problems come if you need to start your journey in an area with no service, or do like I did and exit the navigation app to do other things like make a phone call from a backwoods gas station. When I tried to restart the navigation app it kept waiting to download the directions set from google which wasn't going to happen out there. Lucky for me I remembered enough to get me back to an area with 3G where the service restored functionality to the navigation app. Lesson learned.
Click to expand...
Click to collapse
A preplanned area where you will be navigating can be cached.
It caches the map and directions so you can navigate through an area of no service but it loses the cached data when you exit the app. There is no cached data when starting a trip from an area of no service.
If I'm missing something please do tell. I'd love to know.
0reo said:
It caches the map and directions so you can navigate through an area of no service but it loses the cached data when you exit the app. There is no cached data when starting a trip from an area of no service.
If I'm missing something please do tell. I'd love to know.
Click to expand...
Click to collapse
Google Maps > Menu Key > Make available offline
Google Maps app =/= Navigation app.
Although you do offer a good way to at least have a map on hand.
This is why I also have CoPilot navigation. Completely offline!
Sent from my Galaxy S4
This behavior is not unique to the Galaxy S4, nor is it new. Google Navigation has always been (and almost certainly will remain) a client-server type app that does the "heavy lifting" back at Google HQ. That's not a design flaw, it's a design choice--this approach perfectly serves the needs of some huge fraction of users some huge percentage of the time, without unduly consuming the resources of the phone.
In today's world, if you're in a car in the US, you're almost always within range of a cell tower with data service. Of course, if you're not within range of a cell tower, you're probably far from civilization and that's when it'd be most helpful to have some navigational assistance...
So there's still a place for the self-contained navigators like a TomTom or similar. That market niche is simply much smaller than it was about 5 years ago before Google Maps / Navigation was ubiquitous.
MysticCobra said:
This behavior is not unique to the Galaxy S4, nor is it new. Google Navigation has always been (and almost certainly will remain) a client-server type app that does the "heavy lifting" back at Google HQ. That's not a design flaw, it's a design choice--this approach perfectly serves the needs of some huge fraction of users some huge percentage of the time, without unduly consuming the resources of the phone.
In today's world, if you're in a car in the US, you're almost always within range of a cell tower with data service. Of course, if you're not within range of a cell tower, you're probably far from civilization and that's when it'd be most helpful to have some navigational assistance...
So there's still a place for the self-contained navigators like a TomTom or similar. That market niche is simply much smaller than it was about 5 years ago before Google Maps / Navigation was ubiquitous.
Click to expand...
Click to collapse
I understand its not unique or new but I certainly hope the route calculation becomes a client side option soon. It made sense to do it server side a couple phone generations ago when device processing power was limited but not so anymore. My S4 will run circles around any tomtom or garmin both in processing power as well as gps accuracy not to mention never having to do manual gps fix updates and map updates. The standalone navigational gps is going to go the way of the point and shoot camera. Its just a matter of time.
What you're calling a design choice may have been choice two years ago. Today it is a horrible flaw. There are vast areas of well traveled road that get no service around here (eg. anywhere in the mountains.) Google needs to pull their head out and recognize (or someone else will do it [be]for[e] them.) Sooner the better for them and us.
0reo said:
I understand its not unique or new but I certainly hope the route calculation becomes a client side option soon. It made sense to do it server side a couple phone generations ago when device processing power was limited but not so anymore. My S4 will run circles around any tomtom or garmin both in processing power as well as gps accuracy not to mention never having to do manual gps fix updates and map updates. The standalone navigational gps is going to go the way of the point and shoot camera. Its just a matter of time.
What you're calling a design choice may have been choice two years ago. Today it is a horrible flaw. There are vast areas of well traveled road that get no service around here (eg. anywhere in the mountains.) Google needs to pull their head out and recognize (or someone else will do it [be]for[e] them.) Sooner the better for them and us.
Click to expand...
Click to collapse
Like someone said before, you can download the maps offline for whatever area you need that won't have service.
Google isn't stupid. This is why they introduced this feature. It's not that the phone doesn't have the processing power; having the entire country stored on your phone would take up tons of storage.
There are other GPS applications (in the Play Store) that do this I'm pretty sure, and that is also why standalone GPS units exist. Google doesn't have to worry about losing anything to anyone. For a huge majority of users, Google Maps works perfectly fine.
trebb said:
Like someone said before, you can download the maps offline for whatever area you need that won't have service.
Google isn't stupid. This is why they introduced this feature. It's not that the phone doesn't have the processing power; having the entire country stored on your phone would take up tons of storage.
There are other GPS applications (in the Play Store) that do this I'm pretty sure, and that is also why standalone GPS units exist. Google doesn't have to worry about losing anything to anyone. For a huge majority of users, Google Maps works perfectly fine.
Click to expand...
Click to collapse
On my tomtom the map of the entire US (just roads, not sat images) is about one GB. Not prohibitive by any stretch.
And unless I'm still missing something you can't save maps in Navigation app. Only in Google Maps app which is different and not nearly as good for use while driving.
0reo said:
On my tomtom the map of the entire US (just roads, not sat images) is about one GB. Not prohibitive by any stretch.
And unless I'm still missing something you can't save maps in Navigation app. Only in Google Maps app which is different and not nearly as good for use while driving.
Click to expand...
Click to collapse
I'm almost 100% positive that the Navigation app and Google Maps are the same application. Just like the other app whose name I can't recall that helps you find restaurants, etc. It's all run through Google Maps. The initial interface may be different, but they're the same thing.
I always just search my destination in Maps, then hit navigate. That takes you to the same exact thing the Navigation shortcut will eventually bring you to. I have never really used the offline feature nor do I use the Navigation shortcut, so I can't really instruct you on how to do it through either method. I remember reading the reviews when Google introduced the feature, though, so it definitely works.
Sent from my Verizon Galaxy S4 using Tapatalk 4.
Next time, just leave Navigation running in the background while you make your call. When you hang up, pull down the status bar and tap the Navigation icon & continue on your way.
0reo said:
Google Maps app =/= Navigation app.
Click to expand...
Click to collapse
Except they are. Exact same apk file. Uninstall maps... Navigation disappears.
The navigation icon is basically a maps shortcut.
Sent from my SGH-M919 using Tapatalk 4 Beta
Whatever is happening in the back end, I just don't see the functionality in the front end. I'll play with it more today and see if I'm missing a way.
Surprised no one mentioned the Sygic app in this thread yet -- I tried it a while back and it was pretty decent for a standalone navigation app that you can download maps to your SD card and have the app use those. It is relatively expensive since I last looked though.
I used to have a Garmin Navigation app on my Blackberry Storm. It looked and worked just like my actual Garmin GPS. All map and routing data was on the phone (<2GB) and it worked even with no cell or data signal at all.
I don't know why they don't offer the same thing as an Android app. The full City Navigator North America database is less than 2GB.
stuartv said:
I used to have a Garmin Navigation app on my Blackberry Storm. It looked and worked just like my actual Garmin GPS. All map and routing data was on the phone (<2GB) and it worked even with no cell or data signal at all.
I don't know why they don't offer the same thing as an Android app. The full City Navigator North America database is less than 2GB.
Click to expand...
Click to collapse
I think they decided to not kill their company. They are trying to stay out of the race to zero. Google could kill off every other navigation company in one swoop if they wanted to by offering a free full blown offline maps for android and ios...I think they just don't want the regulatory scrutiny. And they wouldn't be able to collect data on your habits as easily, lol. NSA might get pissed.
Sent from my SCH-I545 using xda premium
SuzakuTheKnight said:
Google Maps > Menu Key > Make available offline
Click to expand...
Click to collapse
Does anyone know of a way to make the caching of maps cache a much bigger area than it currently does?
Sent from my SCH-I545 using xda app-developers app
i understand the op's concern. the main issue being when there is no connection to the internet you cannot get directions. even if you cache a map offline the navigation still won't provide you directions, you can only browse the map area and see where you currently are on that cached map. the reason it works this way is because when you choose directions or navigation in maps google calculates the directions from your location to the point selected. it's not something done within the application, but dynamically via google's servers.
this is almost never an issue for me, except in the rare occasion when i've been traveling and in a tunnel or some remote location where internet connection isn't available. in those cases your best bet is to calculate your directions ahead of time and email them to yourself. you can also cache a map of that area so you can at least browse it offline.
if google ever offers offline navigation/directions then every other mapping service can kiss their company goodbye.
Google built the best. I'd pay for the ability to calculate a route offline.

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