GPS signal Offshore

Have you got a phone signal?

What program on the iPhone are you trying to use? Google maps needs a phone connection to produce the maps. I believe there are other apps for gps that don't require a phone connection. You'll have to search the app store.

Yes, GPS is everywhere. I think those above are saying the iPhone 3G cannot function as a stand-alone GPS device. Like my Verizon Motorola RAZR with GPS. No network connection, no GPS functionality.

Hope this helps somewhat...

http://www.apple.com/iphone/features/gps.html/

It takes the phone a lot longer to find the satellites when it does not get hints from the tower.

The assisted GPS chip set used in the iPhone is designed for near instant satellite lock by getting information from cell towers. Without this it has to listen for satellites itself just like any other GPS, It takes a while.

Just give it 5 minutes. Others have reported that event google mapping application works without cell towers, and you can go to a remote site with no cell coverage, give it time to find a fix and drop a pin. When you get back to cell coverage the pin will show exactly were you were.

No that does not help. Your link is bad.

Apple's iPhone is not a true GPS device. It requires network signal to function as a GPS.

Devices which function alone have a GPS receiver built into the unit. Something the iphone and many other mobile phones don't have.

Apple and other manufacturers are, unfortunately, not very clear or forthcoming with this. Especially when Apple app store is allowing navigation software to be sold.

http://www.apple.com/iphone/features/gps.html

.

Errrmmm... the 3G iPhone does have a GPS receiver built in.

After reading a few articles and drawing some inference (i.e. semantics) it appears to me Apple iPhone has a GPS chip of sorts but not necessarily a standalone GPS chip.

Here's one article that discusses it. There is a reference to a GPS assist capability provide by UMTS.

http://www.macnn.com/articles/08/06/07/leaked.3g.iphone.firmware/

Stop spreading mis-information about the iPhone

It DOES have a true GPS chip with additional capabilities to derive a rough approximation based on cell tower and wifi data. It also can use this information to more quickly locate the satellites and obtain a lock.

Several packages in the app store let you get digital readouts of your position, altitude, and speed even in the absence of map data from the cell system.

The GPS needs a clear view of the sky to obtain a satellite lock, and when it does is shows a blue dot with "sonar" waves emanating from it. The A-GPS shows blue circles.

Add you need do is drive somewhere there is no cell service (In in North American west or Australia this is not hard), and use the GPS to drop a pin on your blank map. Then drive back to cell service area and see that the pin is exactly where you were.

Now Please, stop with the lies about the iphone GPS. It is a true GPS with ADDITIONAL capabilities.

It is a true gps with additional capabilities to more quickly obtain position fixes and obtain approximate fixes while indoors.

In the absence of cell signals it STILL will obtain a true GPS fix, it just takes it longer.

The GPS needs a clear view of the sky to obtain a satellite lock, and when it does is shows a blue dot with "sonar" waves emanating from it. The A-GPS shows blue circles.

A-GPS = GPS = pulsating dot

WiFi or Cell Id = circles