GPSGuided wrote:I note that iFixIt take down only mentioned the cellular antenna and that a smartphone such as an iPhone has more than one antenna built in. Not sure if that 'cellular antenna' is also used by the GPS.
GPSGuided wrote:This is making me wanting to do a GPS home test b/n my Oregon 650 and iPhone 6...
GPSGuided wrote:all because the app I have (MotionX-GPS) and others that I have looked at all applied filtering to the raw data. As a result, a 10min track log on an open balcony generated just 1 data point, irrespective of whether I selected cycling or hiking mode.
warnesy wrote:You can't run it non stop when you are out bush. The phone keeps searching for signal and battery degrades really fast. As far as I'm aware you can't turn cellular off on the iPhone but keep GPS running. I only use it to get quick location info rather than always on.
When Airplane Mode is on, you'll see ✈️ in the status bar of your screen. In Airplane Mode, these wireless features are turned off:
Cellular (voice and data)
Wi-Fi
Bluetooth
If you have a device with iOS 8.2 or earlier, Airplane Mode will also turn off GPS.
RonK wrote:Some outdated information posted here. GPS apps I'm using like Map.Me, Mapout, ViewRanger, Maps3D are able establish my location in Airplane mode.
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GPSGuided wrote:Track log recording is the battery killer and I suspect it'll remain to be the issue.
andrewa wrote:I think that if I was going to be needing a GPS, I'd rather use a dedicated GPS unit. I think that the 7000mAH battery pack was about 280g, whereas I recall that the etrex 20 with batteries was less than 200g. For occasional GPS usage, the iphone was fine. I look at the iphone largely as a replacement for a camera/video, and anything else is a bonus. Battery life is the main limitation.
andrewa wrote:I used my iphone 6 in NZ in January as GPS and camera/video over a week.
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Also used phone and GAIA on Bogong a few weekends ago, and spent more time using the GPS aspect in poor visibility. Battery drain was significant - ~80% over the day, but I had not disabled everything else.
I think that if I was going to be needing a GPS, I'd rather use a dedicated GPS unit. I think that the 7000mAH battery pack was about 280g, whereas I recall that the etrex 20 with batteries was less than 200g. For occasional GPS usage, the iphone was fine. I look at the iphone largely as a replacement for a camera/video, and anything else is a bonus. Battery life is the main limitation. If you could get a really good battery pack with efficient solar charger......now going to try the Apollo something or other power pack 2, which allegedly has 10000mAH and a small solar panel.
andrewa wrote:Lastly, each of these power packs has cost me about $70-100 (2 x 7000mAH, and the Apollo), so I now have a fair investment in power packs, equivalent to the cost of the etrex 20!
Suz wrote:Great on all the additional info again. My motionX test gave my iPhone about 13 hours running time non-stop with some other phone things happening too (calls/text/games) (not a very scientific test as it turned out - I will rerun it). Of course I don't have the screen up all the time - it goes to sleep after a few minutes as well which probably means it wasn't really using much battery then and was just running in the background. I will try leaving my screen 'on' with the app running all the time too, to see how many hours I get out of it before the battery dies. I will also try the test on 'airplane' mode and assess. It is never going to be like operating in the wild, maybe this test is pointless.
Let's say I had an Etrex 20 or whatever, how often do you have to change the batteries in them? That could help me work out the weight of AAs for a trip vs a Xiaomi 16000Ah.
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