OK... got the new iPhone. Display rocks! I kind of miss the older models rounded edges... but once it's in a case I prolly won't notice it much. Video capabilities much improved... low light is really quite good now. LED light works decent.
Here's an odd thing. My old 3Gs is disconnected form service now. There was a thread in here recently about GPS and if it worked without phone service and we determined that it did. I can confirm that. GPS was acquired by the 3Gs. Someone also was saying that with 3G the GPS took a while to acquire... not so here. I can restart the phone and go right to GPS and it finds me in about 2 seconds.
Weird. Previously it would find me at about a mile away by I95 where I presume there is a cell tower... then after about 30-60 seconds it would find my house proper. W/o phone service it works quicker than before. Hmmm. I thought the 3G was supposed to "home" it in more quickly. W/e.
OK... now the iP4. Finds my house ASAP... which leads me to believe the GPS chip or software has been improved over the 3Gs.
Stranger yet. I have Mobile Me and I have used the Find my iPhone feature a few times to see if it worked. (It did). So I thought I would try it with the iP4 and send an alert sound to the phone. Instead it arrived at my disconnected 3Gs. Hmmm... so this feature relies solely on GPS? Cool. Then I look over and see that there is a list on the left and there are 2 phones listed. Weird, since I registered my new phone I would think the old phone would not be listed anymore. Maybe it hasn't had time to clear? So I can find both phones and "ping" both phones.
OK... I figured that since I am going to sell the 3Gs I would try the Remote Wipe feature. It works.
Ahh...this action will remove it from the list now.
The phone is now no longer activated and GPS is not being acquired. Wifi is now off since it needs a password. Was it using wifi to help locate me before?
OK.. now I'm confused. The phone says No Service... yet with wifi I can surf the net. I didn't think it could do that... but I guess it makes sense.
Edit... wifi is enabling GPS to find me/quickly. I turned wifi off and GPS is taking it's sweet time now. It now says my location could not be determined. So... when I said that GPS worked with service.. it was actually finding it with my wifi.? W/O wifi... I cannot acquire a satellite?
Loc: Alexandria, VA
So... when I said that GPS worked with service.. it was actually finding it with my wifi.? W/O wifi... I cannot acquire a satellite?
Yep. When I decommissioned my old 3G, I gave it to my mom who didn't have a phone account, thinking the GPS might be helpful since she lives out in the boonies -- after several hours of tinkering and still not getting a GPS signal, a phone call to Apple confirmed that the GPS will not operate at all without a cell connection. It will also use wireless triangulation when possible, but I'm not sure even that uses the GPS unit ...
Confirmed this with the 3GS earlier this year on a trip to Bryce where there was neither a cell nor wireless signal -- no GPS at all despite having probably the best sky coverage possible.
Lesson here: don't count on the iPhone to give you even coordinates or non-mapped tracking if you're stuck in the middle of nowhere without a connection of some sort =P
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