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How good is your GPS?

I leave my GPS on ll the time, I use MyTracks to track my walks while listening to music over bluetooth and occasionally take a phone call or two, after two hours still show most of my battery; lets say 90%.:D

Using 2.2 rooted with radio and wimax update.

Oh! I find thew GPS to be pretty darn accurate.

Live in a big valley; but narrows the view:
8-10 in view as I move
8-9 in use
Accurate 6.6
 
The GPS on the EVO is one of the best things running on it. Been more accurate than any other GPS phone I've had. How accurate do you need it, 5 inches in a basement of a high rise? Come on....
 
Please download "GPS Test" from the Android Market.

List how many satellites you get "In View" and how many "In Use".

Me:
In View: 12
In Use: 0

Using Samsung Vibrant....which is why I want an EVO if it has a better GPS.

smartphone without a working GPS.. is dumb-phone.
you loose so much in function and features.

i have a hero and it is great..
9-13 view
7-11 use
30-6 ft
but sometimes I have to reboot to get it to work. 1-2 times a week to work right.

when you going to dump the looser and get with the HTC EVO / sprint?
 
Yeppp.......with about 3 weeks of "up time" on the phone....no rebooting here!!!!

on my hero.. i just can not figure out.. why it works soo perfectly for a few days..

then it just can not lock on to the satellite signals. I can watch it with an App...it just can not lock on to more than 1 or 2.. map has me jumping up to 4 miles in all directions!

reboot and it is all perfect again!
 
The Evo GPS is amazing. My job involves a lot of mapping and field navigation, and I occasionally teach basic land navigation courses for colleagues. The Evo GPS has better accuracy and precision than a lot of the dedicated consumer grade handheld GPS units I use for training.
 
Those are pre-2.2 numbers, hardly fair. (I get 33 in Linpack, for example)

Besides, we already knew that Snapdragon CPUs don't have strong GPUs, so the GPU benchmarks are easy wins.

The Snapdragon CPU should, however, hold its own just fine in CPU benchmarks (you know, where 99% of your time is spent).

(Also, just ran the NBench numbers myself, here's what I got on the EVO: )

Memory: 2.648
Integer: 3.995
Float: 0.901

No, I am not overclocking, but with those numbers, the Epic's win record drops significantly, and the wins are much closer.
 
Those are pre-2.2 numbers, hardly fair. (I get 33 in Linpack, for example)

Besides, we already knew that Snapdragon CPUs don't have strong GPUs, so the GPU benchmarks are easy wins.

The Snapdragon CPU should, however, hold its own just fine in CPU benchmarks (you know, where 99% of your time is spent).

How is that hardly fair? It's both phones on 2.1, we're testing hardware performance and software updates don't mean anything. Just because 2.2 can get you better benchmarks doesn't mean when 2.2 for the Epic comes out those numbers won't be squashed so software doesn't mean anything.

And you're wrong the 65nm Snapdragon sucks in comparsion to the 45nm Hummingbird proven time and again, look it up.
 
How is that hardly fair? It's both phones on 2.1, we're testing hardware performance and software updates don't mean anything. Just because 2.2 can get you better benchmarks doesn't mean when 2.2 for the Epic comes out those numbers won't be squashed so software doesn't mean anything.

And you're wrong the 65nm Snapdragon sucks in comparsion to the 45nm Hummingbird proven time and again, look it up.

I just provided revised numbers above that say otherwise. Also, keep in mind that just because one chip is 65nm, and the other is 45nm, does not mean it's always faster.

After all, what's faster, a 65nm Core 2 Duo, or a 45nm Celeron?

And no, I don't think it's unfair to judge the devices on what they're capable of. If Epic doesn't have 2.2 yet, then that's their problem. They can revise THEIR numbers when they get 2.2.
 
I don't put much value in how many satellites it finds. I put the value on whether it's got me in the right location. I don't need to be down to the feet, but it seems to be within 5-50' depending on where I am. Inside buildings it tends to be a little less accurate, but that's only when I'm trying to send my exact location to someone else.
 
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I'm new around here, so maybe I'm a little slow, but I can't figure out what this has to do with GPS sensitivity.

He didn't post it because everyone knows Samsung's Galaxy line of phone has gps issues. He's simply trolling.
 
How is that hardly fair? It's both phones on 2.1, we're testing hardware performance and software updates don't mean anything. Just because 2.2 can get you better benchmarks doesn't mean when 2.2 for the Epic comes out those numbers won't be squashed so software doesn't mean anything.

That's not even wrong.

Optimizations and maker-added kernel changes are always at play.

With 2.2 compared to 2.1 performance, an Epic might get 1.5x, 1.2x, 2x, or 3x better.

Things don't scale linearly no matter how much you want them to.

Do I expect the Epic, having been better than an Evo w/ both running 2.1, to be better than a stock Evo when both are running 2.2?

Well, yeah - kinda.

But the point of testing is simple and in my business, we have a saying - one test is worth a thousand expert opinions.

The test you posted is irrelevant now - Epics are to ship with 2.2 and the Evo is officially at 2.2.

Testing like this by definition includes all hardware and the execution profile defined by software.

To say that software doesn't mean anything is to not understand how software works.

This is my opinion based on professional experience. Cray used to test their compiler upgrades, in part, using my digital signal processing routines, designed specifically for that purpose.

And you're wrong the 65nm Snapdragon sucks in comparsion to the 45nm Hummingbird proven time and again, look it up.

Please carefully consider these remarks of mine -

http://androidforums.com/support-troubleshooting-evo-4g/150025-how-hummingbird-so-much-faster-than-snapdragon.html#post1377369

You'll note I claim that the reviewers are all attributing a GPU metric in mega-triangles per second that is _9 times_ greater than Samsung's own Hummingbird datasheet.

Further - the link there shows a pro output of one benchmark that interesting breaks out the OpenGL (graphics) performance on the Snapdragon as much higher than thought. So - the Snapdragon GPU might not be the dog of the world.

That was with a custom kernel.

What does this tell us?

It tells us what our common sense tells us:

The operating system (Android) is one size fits all - and making it shine is up to the maker's getting their customizations to that right.

To date, no maker has produced a phone that independent devs haven't been able to significantly improve.

Note in that same referenced thread that one Vibrant (Galaxy-class) owner is getting a stellar Quadrant performance of over 1800 using a single root trick with the stock kernel.

Neither the Snapdragon, Hummingbird, nor OMAP are dogs.

Their true differences - despite what tech wannabes with websites proclaim based on stock performance and benchmarks (that many of them openly proclaim to not know what the benchmark means other than bigger is better) - have yet to be learned.

The only thing I'm terribly certain of is that the Epic, out of the box, won't have the 30 fps cap that some people care about - and some don't.

Out of the box - better fps - worse GPS.

As I already cannot stand the sight of the Epic, I'll be replacing its launcher at minimum, and so I won't be stock and I'll have to learn if that helps, hinders, or is net-no-change to its performance. (Assuming they fix the GPS thing and we go thru with the purchase.)

We don't carry benchmarks - we carry phones.

They run apps. When I start seeing performance assessments on the apps on the various phones, maybe then, for me personally, I'll care.

I simply do not understand this fascination with CPU architectures - especially when so little about them is truly revealed due to industrial secrecy.

The only time I've ever cared about CPU architecture was when I writing or modifying kernels.

These three - Snapdragon, Hummingbird, OMAP - are now creating what I consider superphones. They'll continue to incrementally leapfrog each other in performance as their models progress - due to user demands from the _apps_ and the new devices/uses.

I just don't see how you can go wrong buying a phone with any of them on the inside.
 
Reading how GPS actually works might give better insight to why there is a delay between satellites being in view and then "locked".

Global Positioning System - Wikipedia, the free encyclopedia

If it has been a long period of time since the GPS was last used, it must first scan for a visible satellite and then download the almanac. Additionally, if the location has changed significantly since the last use, the satellites the device would believe to be in view according to the almanac will be incorrect and it must enter a scan mode.

Once a satellite is found it then is "In View" but the ephemeris data must be downloaded (a 30 second process) before it can become "Locked".

This process can be sped up using data over the mobile network, but I'm unsure what HTC has implemented on that end. Regardless, in the event a network is unavailable, all data must be acquired via GPS signals.

With respect to location error, again Wiki is your friend. Global Positioning System - Wikipedia, the free encyclopedia
 
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