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Offline Barneyridesagain

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iPhone 11 for nav
« on: December 28, 2019, 03:28:24 PM »
Looking for advise on using an iphone 11 with a nav app vs a real gps. I ordered a Zumo 396, but am sending it back. The screen is too tiny for my old eyes. Debating between ponying up for the larger Zumo or just upgrading my old iphone6 to the new 11 and using it. Concerned about screen brightness in direct sun.
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Offline julianhj

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Re: iPhone 11 for nav
« Reply #1 on: December 28, 2019, 04:34:19 PM »
An iPhone shouldn't be any different to a dedicated nav screen in terms of reflectiveness, just set it to maximum brightness, get a decent mount like a Quadlock and a USB power adapter and you're good to go. I'd certainly do it if I didn't already have a TomTom.

Offline AvgBear

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Re: iPhone 11 for nav
« Reply #2 on: December 28, 2019, 10:42:32 PM »
*Originally Posted by Barneyridesagain [+]
Looking for advise on using an iphone 11 with a nav app vs a real gps.
As I understand it - and I'm no expert by any means - a cell-phone knows where you're at by triangulating off cell towers -- whilst a gps uses satellites.
If you don't have cell / phone service?, you may be lost -- whereas a gps will always find you.
There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.
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Offline K1W1

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Re: iPhone 11 for nav
« Reply #3 on: December 28, 2019, 10:59:01 PM »
*Originally Posted by AvgBear [+]
As I understand it - and I'm no expert by any means - a cell-phone knows where you're at by triangulating off cell towers -- whilst a gps uses satellites.
If you don't have cell / phone service?, you may be lost -- whereas a gps will always find you.

Cell phones have had GPS chips in them for 8-10 years. They work as a GPS without phone reception.

Offline AvgBear

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Re: iPhone 11 for nav
« Reply #4 on: December 28, 2019, 11:30:15 PM »
Yes, but (as I said -- I'm certainly no expert...) -- doesn't the cellphone "estimate" your location from cell tower info? Not gps/satellite info.
There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.
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Offline julianhj

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Re: iPhone 11 for nav
« Reply #5 on: December 29, 2019, 12:03:00 AM »
Google Maps has an offline mode where you can download any areas you choose Im advance; navigation works fine without mobile reception.

Online Rtwo

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Re: iPhone 11 for nav
« Reply #6 on: December 29, 2019, 12:13:57 AM »
*Originally Posted by julianhj [+]
An iPhone shouldn't be any different to a dedicated nav screen in terms of reflectiveness, just set it to maximum brightness, get a decent mount like a Quadlock and a USB power adapter and you're good to go. I'd certainly do it if I didn't already have a TomTom.

There's no way that my iPhone comes close to the visibility in high sunlight that my old tomtom 400 does.
The iPhone is impossible at times, the tomtom, very occasionally
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Offline K1W1

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Re: iPhone 11 for nav
« Reply #7 on: December 29, 2019, 12:24:56 AM »
*Originally Posted by AvgBear [+]
Yes, but (as I said -- I'm certainly no expert...) -- doesn't the cellphone "estimate" your location from cell tower info? Not gps/satellite info.

No. They have a GPS chip just like a TomTom or Garmin and they measure to the same degree of accuracy using GPS signals from satellites. They use tower triangulation for the phone but not for mapping applications.

Offline chuckxc

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Re: iPhone 11 for nav
« Reply #8 on: December 29, 2019, 12:38:44 AM »
Rain,  gloves, screen brightness, heat, etc.
 Phone gps has better maps but crap ergonomics.
Not a replacement for moto gps unit.
Garmin should incorporate google maps.
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Offline Barneyridesagain

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Re: iPhone 11 for nav
« Reply #9 on: December 29, 2019, 03:26:24 PM »
Thanks guys all for the replies! Still undecided. Good arguments for both.
Im only responsible for what I say, not for what you hear.
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