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Discussion in 'iPhone' started by ruinfx, Jun 6, 2008.
Could have seen this coming, I suppose. After talk of test firmware being distributed to carriers and all...
This will be a post from Arn in 3.. 2.. 1...
interesting it says tri-band hsdpa (sorry t-mobile) and aGPS not real GPS.
Here's the obligatory wikipedia link.
assisted GPS. means that it uses both satellites and the network to position.
Isn't aGPS better?
i guess im just wondering if the new iphone will be able to position without the help of the network (satellites only).
Well from what I know aGPS just uses towers to get a more accurate/faster fix on your location, so if the tower information is weak/degraded, then it just uses the satellites. I might be wrong.
I don't see anything about a better camera (or a front camera), which I'm sure will have lots of people upset...
To be honest, the lack of news about the camera doesn't bother me. They can't make it worse, and my current cell's 2MP camera works just fine for me. I'm much happier about the (basically) confirmation of GPS. Seriously, it may not seem like a big deal to some, but I have a terrible sense of direction and and terrible memory for street names. I wish I could have a GPS put in my brain (It would prevent me from losing my mind).
Edit: sweet, last post in a dead thread.
what 3g band does tmobile usa use? is it the aws 1700mhz and therefore not compatible?
Doesn't matter how much crap they fill this phone with. Fact is, someone will always be upset over something in a new product.
So is there any certainty now to where NYC T-Mo users, or T-Mo 3G iPhone users of the future stand?
3Gless is the vibe I'm getting.
I'm actually not so sure that it would be software based at all... Just a better sensor delivering a better signal to the hardware... Could be wrong though.
This story of aGPS so far seems fairly reasonable and straightforward, but alas it is not. See aGPS is not some monolithic, written-in-stone-standard. In fact, Qualcomm, who makes the most popular aGPS chips (called GPSOne) has four different possible configurations for aGPS. How aGPS is actually implemented on the device appears to be up to the device OEM/cellular carriers.
These four options are:
* Standalone - Your handset has no connection to the network, and uses only the GPS satellite signals it can currently receive to try and establish a location.
* MS Based - Your handset is connected to the network, and uses the GPS signals + a location signal from the network.
* MS Assisted - Your handset is connected to the network, uses GPS signals + a location signal then relays its 'fix' to the server, which then uses the signal strength from your phone to the network towers to further plot your position. You can still maintain voice communication in this scenario, but not 'Internet/Network service' ie Web Browser, IM, streaming TV etc..
* MS Assisted/Hybrid - Same as above, but network functionality remains. Normally only in areas with exceptional coverage.
btw, I have a phone that currently has aGPS in it that operates in stand alone mode so I don't know what your definition of a real GPS is but, I can get GPS sat coordinates in airplane mode on my phone.
Will aGPS act exactly like a regular GPS device?
I'm not asking about how it gets the data- but will it function exactly
like a regular GPS or will in not be as accurate?
my definition of "real gps" is like the standalone option that you listed. the phone has no network connection and only interacts with the satellites to position.
I don't think anyone can answer this question about the iphone until it is released but, in general it depends on the type of aGPS chip used and what is allowed by the cell phone producer(Apple) and the carrier(AT&T).
I'm hoping for standalone aGPS operation as that acts just like a regular GPS and doesn't require a network connection to the carrier.
I have aGPS standalone in my current phone and it works just as well accuracy-wise compared to some of the other Garmins and Mios I have owned.
Yep, and aGPS is capable of being a "real gps" depending on the chipset they use and whether or not they decide to enable it in the software.
I have my fingers crossed that they won't cripple it.
aGPS is not proper GPS, I had this on my Motorola A835 I got a few years ago for £25, its nothing new. Still better than just WiFi and cellular networks alone, though.