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iPhone 6 Motion Calibration Always Using Location Services

hi


just received my iphone6 and is updated to ios8.


IVe noticed that the location services was constantly on so went through each item which was enabled for location sharing and disabled one by one. I discovered that under Privacy > Location Services > System Services > Motion calibration was purple. As soon as I disabled it location sharing icon switched off. As soon as i enabled it it came back on again and the purple icon showed up next to motion calibration meaning it was in use.


So my question....what is motion calibration and why is it constantly using location services??


thanks

iPhone 6, iOS 8

Posted on Sep 20, 2014 6:57 AM

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Question marked as Top-ranking reply

Posted on May 19, 2017 3:01 PM

CtownClowns wrote:


My SE has been doing this for the last day. Researching it led me here. What does he mean stop worrying about it? LoL. The arrow is purple meaning it's actively being used.

WRONG. It is explained very clearly what a purple arrow means, and it does not mean it is actively being used. Read what it says at the bottom of the Location Services setting:

User uploaded file

"Recently Used" is NOT the same as "Actively being used."



Yes...that drains the battery.

Also wrong. There are anywhere from a dozen to hundreds of apps and functions on your phone (depending on how many apps you have installed) that consume battery. You are focusing on the least likely cause of your battery problem.


The Location Services arrow on my phone's status bar is always displayed, and going to location services I see a total of 24 arrows displayed, and 10 of them are purple (one is a geofence, which DOES continuously actively use Location Services). If Location Services was a major battery drain my battery life would be 15 minutes. Instead, I only really need to charge every 2 - 3 days; if I charge overnight by the end of the day my remaining battery is typically 70%. And I'm a heavy user, with over 250 apps installed.


By paying attention only to one arrow in Location Services you are essentially denying yourself the opportunity to fix your battery issue.

265 replies

Feb 13, 2015 4:02 AM in response to iZian

Hi

That is what I was talking about when I said that if you have fully charged your iPhone, same thing happen to me in my last restore. iPhone was working with just first charge of battery for about 26 hours (I almost didn't use it) and when I fully charge it for the firts time, MC started to work.


Well, I had everything ready to restore my iPhone the way you said yesterday. One more time, I give up and will let the iPhone do what it wants haha.

Feb 17, 2015 10:26 AM in response to _zulu_

How is this even possible?

The GPS signal is of course only passive communication, but every other App (Camera, Maps, etc) will say "Turn Off Airplane Mode or Use Wi-Fi to show your location on the map". MC indicator stays on even over Night with Airplane Mode on and no Wi-Fi activated.


Maybe it's a bug or it uses not the GPS signal to calibrate (or whatever its doing - because I think the iPhone do not need calibrating it 24/7)

User uploaded file

Feb 17, 2015 11:46 AM in response to ferdinand l.

A GPS signal is not passive. It is a signal.

A GPS receiver is also not completely passive.

A GPS receiver can fail in such a way that it actually transmits a signal fed back on the same frequency; effectively jamming GPS. So FAA restrictions mean that you shouldn't operate a GPS on a commercial flight. I think it's correct to disable GPS when airplane mode enabled. I noticed when I had disabled my GPS when I selected the my location button in Maps the location icon did come on momentarily on the task bar while the message telling me that I needed to disable airplane mode popped up.

I don't really know what's happening with motion calibration. Just because something is using location services; is there anything that states that is actually using active positioning constantly?

Feb 19, 2015 4:08 AM in response to _zulu_

Hi,


I also have the same issue and below method fixed.

Turn off wifi

Restart phone


Only turn on wifi if you wanted to connect to wifi and turn off wifi if you are out of connected wifi range.

This issue comes if your phone wifi is on always.


This looks odd but by following this method fixes the issue for those who do not want to see location services icon always on due to motion calibration.


Also I see there is huge improvement in battery life by turning off wifi and turn on only when required.


I think there is some relation between this wifi on and motion calibration.


Thanks,

Vamsi

Feb 19, 2015 6:34 AM in response to vamsi krishnafromsingapore

Of course, with WiFi off if your phone is lost or stolen Find my iPhone will not work reliably. But losing the phone is a small sacrifice for not seeing the location services icon, I guess.


I just don't get it. Location Services is one of the key features of the iPhone. It's incomprehensible to my why all of you want to cripple your phone just so you don't see an icon in the status bar. A better way to get rid of the Location Services icon is to sell the phone and buy a dumb phone.

Feb 19, 2015 6:48 AM in response to Lawrence Finch

Tthat's not what this discussion is about. It's about trying to understand why for *some* people the MC is requesting location data 100% of the time. There's no explanation. if it were by design; why have the option to show when the system is using location, if by default it always does; that switch might as well say "always put location symbol on bar" Because that's what it does.

WHy does MC only do this after a while? It didn't start for 24 to 48 hours then off it went never to stop.

Feb 19, 2015 8:44 AM in response to Bezares_

Hi Bezares,


Normal restart of phone.


1. Turn Wifi off

2. Switch off phone

3. Switch on phone


Turn phone wifi on whenever you wanted to connect wifi and turn off phone wifi if you are out of wifi connected network.

Turning on wifi only when required is difficult but I see no other solution.


I turn on phone wifi once I reach home for connecting to home wifi and turn off phone wifi while leaving home.

I did this for 1 month with all system services on including Motion calibration and location services icon is not always shows during entire month.

Feb 19, 2015 9:11 AM in response to Bezares_

Bezares_ wrote:


The dumb thing is thinking that find my iPhone just works with wifi on 😉


Thus demonstrating your total ignorance of Location Services and your inability to read. Location Services, which Find my iPhone requires, uses several sources of information, including GPS, cell tower locations, AND WIFI router locations. WiFi is the most critical, because it is the most accurate. And it works indoors. GPS is completely useless indoors. So unless your thief only uses the phone outdoors, with WiFi off all that is left is cell tower triangulation, which will be very approximate, meaning within a few blocks of its actual location. Which is why I said; "with WiFi off if your phone is lost or stolen Find my iPhone will not work reliably." Where did I say it wouldn't work? It will pretty much be useless, however.


Why do you think the iPhone displays a message saying you should turn WiFi on for improved location accuracy whenever it is off and you use an app that requires location services? Did they just make it up to annoy you?

Feb 19, 2015 9:13 AM in response to ardijanCH

ardijanCH wrote:


IT was not designed with motion calibration always on, because my wife has the same iPhone but motion calibration activates only a few times! Understand?

How do you know that? Does your wife have exactly the same applications on her phone that you have on yours, and uses them in exactly the same way at the same times? The question is does the software in the phone know what it is doing, or do you know better how it is supposed to do its job? My money is on the iOS and app designers.

iPhone 6 Motion Calibration Always Using Location Services

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