I agree that many of the system services can be turned off, but there are a few which should stay on, like Find my iPhone and Compass Calibration (unless you never ever use the compass), also, if you use the Health app to check how far you walked "Motion calibration and Distance" should probably remain on.
Here is a portion of an article about location services which explains what "Cell Network Search" and "WiFi Networking" do: Crowd-sourced Wi-Fi and cellular Location Services If Location Services is on, your device will periodically send the geo-tagged locations of nearby Wi-Fi hotspots and cell towers in an anonymous and encrypted form to Apple to augment Apple's crowd-sourced database of Wi-Fi hotspot and cell tower locations. In addition, if you're traveling (for example, in a car) and Location Services is on, a GPS-enabled iOS device will also periodically send GPS locations and travel speed information in an anonymous and encrypted form to Apple to be used for building up Apple's crowd-sourced road traffic database. The crowd-sourced location data gathered by Apple doesn't personally identify you. Here is a link to the entire article: https://support.apple.com/en-ca/HT201357 Best regards, Sieghard -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Chris Sent: Friday, August 07, 2015 11:46 PM To: [email protected] Subject: Re: data issue and related questions Hi please turn all system services off. They are not necessary and will certainly put a drain on both your battery and cellular data. On 08/08/2015 01:32, Paul Ferrara wrote: > I have 2 data questions. > > 1. What is system services, and should it be using half a gig of data in a > 7-day period? > > 2. Can the Alex voice contribute to using extra data; it wouldn’t make sense > to me, but we are trying to think of everything. Our data is overaging and > only on my wife’s phone, and we have no explanation. That phone was reset > then later backed up and restored and has another issue I will mention in a > separate post. > > Thank you. > > Paul > -- The following information is important for all members of the viphone list. All new members to the this list are moderated by default. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. The archives for this list can be searched at http://www.mail-archive.com/[email protected]/. --- You received this message because you are subscribed to the Google Groups "VIPhone" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/viphone. For more options, visit https://groups.google.com/d/optout. -- The following information is important for all members of the viphone list. All new members to the this list are moderated by default. If you have any questions or concerns about the running of this list, or if you feel that a member's post is inappropriate, please contact the owners or moderators directly rather than posting on the list itself. The archives for this list can be searched at http://www.mail-archive.com/[email protected]/. --- You received this message because you are subscribed to the Google Groups "VIPhone" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/viphone. For more options, visit https://groups.google.com/d/optout.
