Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

In a few weeks, I will have the iPhone 4. I won't take data with SMS-call hours. But I love taking pictures wherever I go, and the geo-tagging feature is a great thing.

Does the iPhone 4 geo-tag pictures usefully even without data?

share|improve this question
add comment

1 Answer

up vote 6 down vote accepted

Yes; The Geo tags are written into the images via the native Location Services within the phone, primarily via the GPS chip the phone contains.

Since the information written is merely latitude/longitude, you do not need to have a data connection in order for that information to be determined and added.

The need for a data connection in tandem with photos is the ability to place them on a map, when using iPhoto for example.

share|improve this answer
6  
Even if the GPS is low quality or you are on a device without GPS, iOS keeps a cache of potential base station WiFi (and in the case of cell phones - cellular towers) so that all three radio signals (GPS, cell, WiFi) could be used to assist in geolocating without a working data connection. –  bmike Dec 28 '12 at 21:29
    
Yep, now I'm using an iTouch and I knew for the wifi database. But the cellular tower I didn't know. Thanks :-) –  tib20 Dec 28 '12 at 21:32
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.