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macrumors 68040
Original poster
Apr 13, 2009
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Northumbria, UK
I got my new Series 2 42mm SS on Friday, and thought I'd try the GPS function today. Went out for an Outdoor Walk today without my iPhone. When I got back, I opened the iPhone Activity app and all the data from the walk seemed to be there, except for a GPS map of my route. Am I missing something?
 
IMG_1072.jpg
I got my new Series 2 42mm SS on Friday, and thought I'd try the GPS function today. Went out for an Outdoor Walk today without my iPhone. When I got back, I opened the iPhone Activity app and all the data from the walk seemed to be there, except for a GPS map of my route. Am I missing something?
You should be able to select the "workout" icon in the activity app and see the route like this screenshot.
 
By the way, also with a series 2 it's a good idea to do the first 2-3 runs WITH you iPhone, because the motion sensors can help to make the calculations more precise.
 
By the way, also with a series 2 it's a good idea to do the first 2-3 runs WITH you iPhone, because the motion sensors can help to make the calculations more precise.
Not true or needed. The :apple:Watch has a gyroscope and accelerometer too. There is no need to carry the iPhone in relation to calibration with a S2.
Apple said:
....calibrate your Apple Watch...If you don’t have an Apple Watch Series 2, bring your iPhone...

https://support.apple.com/en-us/HT204516
 
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Not true or needed. The :apple:Watch has a gyroscope and accelerometer too. There is no need to carry the iPhone in relation to calibration with a S2.


https://support.apple.com/en-us/HT204516
True, but that's not the sensor I am talking about... the watch lacks barometer support (although ifixit did find the device in the watch, Apple did not yet add software support for it) and this is _essential_ for accurate measurements unless you're running in a completely flat landscape which is hard to find... inlees ofcourse you're not running on the street but on a running track.
 
...it's a good idea to do the first 2-3 runs WITH you iPhone, because the motion sensors can help to make the calculations more precise.

True, but that's not the sensor I am talking about... the watch lacks barometer support (although ifixit did find the device in the watch, Apple did not yet add software support for it) and this is _essential_ for accurate measurements unless you're running in a completely flat landscape which is hard to find... inlees ofcourse you're not running on the street but on a running track.
The barometer is not a motion sensor. Also the iPhone's barometer can't be 'calibrated' to the :apple:Watch. In order for the :apple:Watch to use the iPhone's barometer you would need to have the iPhone with you all the time when using the Workout app and not just "the first 2-3 runs". Also it looks like the Activity app uses geological data bases (example: https://ngmdb.usgs.gov/ngm-bin/ngm_compsearch.pl) to calculate elevation gains/losses when using with GPS. Many running/biking activity trackers use this method for elevation calculation.

Screen%20Shot%202017-01-10%20at%205.52.29%20PM_zpsno416bs2.png
 
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