I think it’s more the load from the GPS chip itself.  If you think about it it 
has to do a lot of math and calculating to output a position and operate a 32 
channel receiver.  I think with the personal GPS receivers they just put a bit 
more beefy battery in them for better life.

> On Sep 14, 2015, at 5:42 PM, Brent Harding <[email protected]> wrote:
> 
> I imagine with all the different stuff going on in the phone, the GPS signal 
> is pretty weak, and it has to try harder than dedicated GPS devices do. One 
> would think that using the approved external bluetooth receivers that have 
> their own battery might help some, but I think Apple still combines that with 
> the phone's internal sense of the location.
> 
> ----- Original Message ----- From: "David Chittenden" <[email protected]>
> To: <[email protected]>
> Sent: Monday, September 14, 2015 3:27 PM
> Subject: Re: iPhone 6S?
> 
> 
> No, the battery drain is primarily from the GPS signal being so weak. The 
> power drain from the mobile connection is quite minor in comparison. I have 
> almost equivalent battery drain whether I use unboard maps from TomTom, or 
> internet based maps from AppleMaps or GoogleMaps.
> 
> David Chittenden, MSc, MRCAA
> Email: [email protected]
> Mobile: +64 21 2288 288
> Sent from my iPhone
> 
>> On 15 Sep 2015, at 02:43, 'Chris Blouch' via MacVisionaries 
>> <[email protected]> wrote:
>> 
>> I've always wondered if the GPS drain was due to getting the coordinates all 
>> the time or the constant downloading of data over the cellular internet 
>> connection. I guess if there is a GPS app with all the maps included (would 
>> be quite large) that would be a good test. I think Navigon was one that had 
>> the maps baked into the app.
>> 
>> CB
>> 
>>> On 9/14/15 10:07 AM, Brent Harding wrote:
>>> I agree. It seems that next to video streaming, location services are the 
>>> biggest culprit of battery drain. Since we don't know for sure, it's hard 
>>> to say if Seeing Eye is more of a drain than it could be if maps were in 
>>> local storage as opposed to maintaining a constant connection to their 
>>> servers. I imagine some of that battery drain can be decreased through 
>>> things they can do in software, but I thought I heard that the GPS in 
>>> phones is a more power hungry way of doing it than the little GPS receivers 
>>> people used with their note takers. They might be already at a point where 
>>> we need some kind of breakthrough in batteries to increase the time we get 
>>> by increasing the power without changing the size.
>>> 
>>> ----- Original Message ----- From: "'Chris Blouch' via MacVisionaries" 
>>> <[email protected]>
>>> To: <[email protected]>
>>> Sent: Monday, September 14, 2015 8:23 AM
>>> Subject: Re: iPhone 6S?
>>> 
>>> 
>>> Only major thing would be battery life. Keep all those features rolling
>>> for a week on a charge would be nice. Probably some new even faster
>>> networks will be coming down the pipe but, yes, they seem to have
>>> completed addressing all the major limitations.
>>> 
>>> CB
>>> 
>>>> On 9/14/15 8:48 AM, Scott Granados wrote:
>>>> I really don’t see what they will add after this.  The phone has every 
>>>> thing now.  A really solid radio finally that works on all the networks 
>>>> fully, a nice high end camera, fast 64 bit processor, NFC, where do they 
>>>> go from here?
>>>> 
>>>>> On Sep 12, 2015, at 11:44 AM, Donna Goodin <[email protected]> wrote:
>>>>> 
>>>>> Well, you'll have to let us know what you think!
>>>>> Donna
>>>>>> On Sep 12, 2015, at 9:21 AM, george b <[email protected]> wrote:
>>>>>> 
>>>>>> Ah,
>>>>>> 
>>>>>> I got it, so I think it is awesome and I already ordered a 6s plus
>>>>>> 
>>>>>> -----Original Message-----
>>>>>> From: [email protected] 
>>>>>> [mailto:[email protected]] On Behalf Of Donna Goodin
>>>>>> Sent: Saturday, September 12, 2015 06:57
>>>>>> To: [email protected]
>>>>>> Subject: Re: iPhone 6S?
>>>>>> 
>>>>>> Well, that's certainly true.  I just wondered what the take-aways were 
>>>>>> from thursday's event.
>>>>>> Cheers,
>>>>>> Donna
>>>>>>> On Sep 12, 2015, at 8:37 AM, Daniel Miller <[email protected]> wrote:
>>>>>>> 
>>>>>>> Hi,
>>>>>>> 
>>>>>>> We really won’t know anything until people actually get their hands on 
>>>>>>> it on the 25th. There are hands-on articles, but those don’t give any 
>>>>>>> indication of how voiceover will work with 3D Touch, naturally.
>>>>>>> 
>>>>>>>> On Sep 12, 2015, at 8:33 AM, Donna Goodin <[email protected]> wrote:
>>>>>>>> 
>>>>>>>> Hi all,
>>>>>>>> 
>>>>>>>> Just wondering what people have heard about the iPhone 6S.  Any 
>>>>>>>> worthwhile developments?
>>>>>>>> Cheers,
>>>>>>>> Donna
>>>>>>>> 
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