Testing is showing some phones have better speed resolution than others when used with GPSLogit.
Please add details of your phones tested resolution so we can get an idea of the phones best suited for gps speedsailing purposes.
Best
0.02 knots resolution
Alcatel Onetouch
Samsung Galaxy J1
Worst
0.486 knots resloution
Sony Xperia
Motorola Moto X
Boombuster GT-31 35.475 33.592 17.842 21.876 28.154 60.379
Logit app Moto-G 35.232 33.687 17.777 21.636 28.18 60.035
Used the Logit app yest but it recorded nothing turned it on before and switched off when I came in but it read nothing.
Galaxy Ace 3 (GT-S727ST) .486kts
Just tested Gavin's LG, he's getting back to me with model number, but it's not recent because it had v4.1.2 in it, he's had to upgraded it so logit loads.
It's resolution is .019kts
I'm testing this in real speed, by clicking on the doppler speed column header. This sorts the column by speed, then it's just a matter of scrolling through the column to find the minimum difference between speeds.
Best
[b]0.02 knots resolution
Alcatel Onetouch [/b](4037T)[b]
Samsung Galaxy J1
Worst
0.486 knots resloution
Sony Xperia Motorola Moto X
Galaxy Ace 3[/b] (GT-S727ST)
I confirm my Sony Xperia also has Doppler resolution of 0.486 kts.
Interestingly, the trackpoint data resolution comes up as 0.005 to 0,006! But there is no way it is that accurate.
Most phones use assisted GPS. This was put together when the yanks needed better 911 emergency location and uses mobile phone towers to assist in triangulation.
the joy of android means that you have way too many hardware platforms. Some will only have assisted GPS and will require an internet connection and number of phone towers to anywhere near remotely accurate. Some are even reliant on google wi-fi positioning system.
neither of these systems work well outside metro areas and are dependant on your phone carriers ability to supply accurate aGPS information.
so, in a nut shell, if it does not have a autonomous GPS capability (functions without a data connection), it's next to useless.
put the phone in airplane mode, then run your tests again and check the accuracy.
I am testing the Sony Xperia without any phone connection. I have not even installed the sim card. It definitely contains a GPS.
Manfred's program also specifically accesses the Doppler speed data from the phones GPS.
If you know of any phones that don't actually contain a GPS chip, please list them for us.
There are 1000's of Android handsets on the market (At the end of 2014, about 18,796 different types apparently).
there are no standards manufacturers adhere to. As long as it runs the "Android execution environment" then you can flog it as an Android device.
So the 18,000 odd types of devices will run a multitude of hardware permutations, such as CPU and GPS chips. Some will be of far greater quality than others.
if your trying to define a standard, you would be better of choosing a model of phone that everyone has to use, otherwise there are far too many permutations. That's why the GT-11/31 etc. are a great leveler as everyone uses the same device.
It's obviously going to be too hard to test all the posibilities and OK some and black list others. But I think it's a worthwhile project to list the ones that are tested, at least their max resolution.
This was never going to be completely level playing field anyway, and for a great number of GTCers, there's not going to be any world shaking numbers.
The phone is such a great device, I think the better ones should be allowed for posting purposes, even the Xperia's numbers have come up very close to my GW52 so far.
It's probably best if the top end of the game posts with devices that log the sdop numbers.
I think the easiest way to confirm a device suitability is to ensure all testing is a level playing field.
airplane mode on (or no SIM sailquik)
decide a tolerance level
analyse and your done.
that will confirm if the GPS in the device is accurate enough.
I fully agree the rules should be different at the top end of town. It's great that GPSTC is still inclusive and being able to use your phone is one less financial barrier to having a go.
Best
[b]0.02 knots resolution
[/b]Samsung Galaxy S5
Samsung Galaxy S3
Samsung Galaxy SIII mini
Samsung Galaxy J1
Sony Xperia Z3
Alcatel One Touch Evolve 2
Worst
[b]0.486 knots resloution
Huawei Ascend Y330
Sony Xperia Z1 compact
Sony Xperia E1
Motorola Moto X
Motorola Moto E
Galaxy Ace 3[/b] (GT-S727ST)
I received this data from Manfred on phones he has tested:
All are listed already by Roo but with some more detail.
Huawei Ascend Y330 is listed from Manfred as having a resolution of 0.019 kn, while Roo lists it as 0.486 kn Resolution.
Which list is correct?
Hannes
OK. Thanks Mike. I guess those are not sold normally in Australia. Good to know one must look out for cheap Android phones which don't have the required GPS in them though.
Thanks Yo Yo. Thats a good code to have. Had a bit of a fiddle......
you have to be really careful when ordering a phone on gearbest, for the life of me I was sure the one I'd chosen had a gps....
arrived her, didn't have one.... (doesn't really matter I gave it to my mum and it was 60$)
same thing for language, was pretty sure I'd seen french but no french in the menu.
But awesome site, I've been ordering sh!tloads of stuff and it arrives well packaged and freight free.
Which earphones did you get Decrepit ? I got mine from them last week, tried them today, awesome !! (not much bass though)
same I got, clear sound, do tend to pop out of the ear ( I didn't use the ear clips provided, will next time).
you still hear the wind but as a background noise.
I haven't received my phone yet ( http://www.gearbest.com/cell-phones/pp_62902.html) so I just listened to music for an hour whilst sailing, like I said before a bit more bass would be better.
waterproof : didn't fall so can't really tell, but gave them a rinse and they still work.
funny thing is the instructions tell you you'll hear prompts in English but they are in Chinese so at first you have no clue if it's saying power on or off.... you're better off checking the every small led light!
Love the magnet function, very nice packaging too ! and different size ear plugs
all my mates at the beach want some now, starting a business
You phone now says it's out of stock, and the other colours are more expensive, so hope you got the last yellow one!
When you get it, an evaluation of it's resolution would great, also if you can figure out how, it's sensitivity.