Go Back   MacRumors Forums > iPhone, iPod and iPad > iPhone

Reply
 
Thread Tools Search this Thread Display Modes
Old Dec 10, 2010, 03:41 PM   #1
ndpitch
macrumors regular
 
Join Date: Jun 2010
Airplane mode in a foreign country

So I went to the Dominican Republic and took along my iPhone 4 to take some pictures and videos, and use WiFi in the hotel to check emails and such. I figured I'd just put it in airplane mode, and only use the wifi as to not rack up roaming charges.

Today, I was looking at my pictures that I took using the 'Places' function, and it turns out the phone still tagged all the exact locations that I took the pictures at, as if the GPS was still on and being used. How did this happen? I thought airplane mode turned all that stuff off?

Then yesterday I received an email from AT&T that said something along the lines of "tips when using your iPhone when you're abroad..."

Am I screwed for my next bill? The phone never came out of airplane mode until I landed back in the states. I'd be mad if you still get charged for roaming data even if you're in airplane mode...
ndpitch is offline   0 Reply With Quote
Old Dec 10, 2010, 03:53 PM   #2
Fliesen
macrumors 6502a
 
Fliesen's Avatar
 
Join Date: Mar 2010
Location: Austria
first of all: doesn't wifi _not_ work in airplane mode?

secondly. when you take a picture, the iPhone uses its GPS chipset to determine your coordinates, it never 'pulls' data from anywhere, but just triangulate you.
Fliesen is offline   0 Reply With Quote
Old Dec 10, 2010, 03:55 PM   #3
TEG
macrumors 604
 
TEG's Avatar
 
Join Date: Jan 2002
Location: Langley, Washington
Send a message via ICQ to TEG Send a message via AIM to TEG Send a message via MSN to TEG Send a message via Yahoo to TEG Send a message via Skype™ to TEG
The GPS is a passive system, so it still works when in Airplane Mode (nothing is sent, only received... directly from satellites). So long as you did not enable data, then no data was sent. You should be just fine.

Edit:
Quote:
Originally Posted by Fliesen View Post
first of all: doesn't wifi _not_ work in airplane mode?

secondly. when you take a picture, the iPhone uses its GPS chipset to determine your coordinates, it never 'pulls' data from anywhere, but just triangulate you.
Once you enable "Airplane Mode" you can then go in and enable WiFi. That way you can use WiFi on WiFi equipped flights, without making cellular connections.

TEG
__________________
Apple and Dell are the only ones in this industry making money. They make it by being Wal-Mart. We make it by innovation, - Steve Jobs
The Tegian Zone-Glass Onion Radio
TEG is offline   0 Reply With Quote
Old Dec 10, 2010, 03:57 PM   #4
Scott90
macrumors 6502
 
Join Date: Jul 2008
I got that email a few weeks ago, so I'm guessing they are just sending it out to everybody since a lot of people go abroad during the holidays. You won't get charged any extra's, the reason your photos are being tagged is because many wifi locations are registered and so you can use location services based on what wifi network you're connected to. That's how location services works on an iPod touch.

I was at the AT&T store yesterday, they told me that as long as data roaming is off, I won't be charged any extra's for data usage. Of course, if you send or receive messages or phone calls, they will charge you for that, but no extra data charges if data roaming is off.
Scott90 is offline   0 Reply With Quote
Old Dec 10, 2010, 06:19 PM   #5
ndpitch
Thread Starter
macrumors regular
 
Join Date: Jun 2010
Thanks much. I didn't know the GPS was in a sort of "always on" state, and that it didn't use data. The final verdict will come with the next bill, heh.
ndpitch is offline   0 Reply With Quote
Old Dec 10, 2010, 06:46 PM   #6
Merkie
macrumors 65816
 
Join Date: Oct 2008
Quote:
Originally Posted by ndpitch View Post
Thanks much. I didn't know the GPS was in a sort of "always on" state, and that it didn't use data. The final verdict will come with the next bill, heh.
You didn't know it didn't use data? Then you how did you think navigation systems work?
Merkie is offline   0 Reply With Quote
Old Dec 10, 2010, 08:32 PM   #7
firewood
macrumors 603
 
Join Date: Jul 2003
Location: Silicon Valley
1) You can turn wifi back on while in Airplane mode. Just look in Settings.

2) If either wifi is on or the device is not in Airplane mode, the GPS radio can be turned on.

3) Even without any cellular or wifi signal, the iPhone's AGPS receiver will eventually lock on to some satellites if it's in the open (which may take many many minutes on older devices). This does not use any cellular data.

4) With cellular data off, the Maps app may show you nothing, but many other GPS apps will show you the GPS latitude and longitude, accuracy, etc. Maybe the built-in Compass app as well.

AFAIK.
firewood is offline   0 Reply With Quote
Old Dec 11, 2010, 07:56 AM   #8
Daveoc64
macrumors 601
 
Join Date: Jan 2008
Location: Bristol, UK
Quote:
Originally Posted by firewood View Post
3) Even without any cellular or wifi signal, the iPhone's AGPS receiver will eventually lock on to some satellites if it's in the open (which may take many many minutes on older devices). This does not use any cellular data.
That wouldn't be A-GPS. A-GPS requires a data connection:

http://en.wikipedia.org/wiki/Assisted_GPS
__________________
Nexus 5 32GB Black (Three UK) | Nexus 7 (2012) | Kindle Paperwhite (2013)
iPhone 4 32GB
White MacBook (Late 2007)
Windows 8.1 | iCloud, Dropbox, Spotify Premium
Daveoc64 is offline   0 Reply With Quote

Reply
MacRumors Forums > iPhone, iPod and iPad > iPhone

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
Airplane Mode Abroad lilface iPhone 13 Apr 1, 2014 01:39 AM
Want to visit msn.com while in a foreign country YS2003 iPad Apps 1 Oct 1, 2013 07:49 PM
Wifi can be used in Airplane mode now. gMacbookPro iPhone 19 Jul 28, 2013 08:14 AM
Airplane Mode Warning Mode With iMessage & WiFi kingray iOS 6 2 Oct 11, 2012 04:28 PM
charging in airplane mode white4s iPhone 4 Jun 19, 2012 01:10 PM

Forum Jump

All times are GMT -5. The time now is 01:22 AM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC