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  • xutian Level 1 (0 points)


    Re: The iPhone 5 uses Cellular Data over WiFi?

    Sep 24, 2012 2:48 PM (in response to DJPlayedYA)

    I think a "finicky" wifi in IOS 6 is the culprit here!

    I do not have a cell data plan (in fact, I even have it switched off from the network settings) and since upgrading to IOS6 internet over wifi has been extremelly unstable, with the connection being constantly dropped.

    So I am guessing that if your wifi connection is also being intermitently dropped the phone will have to resort to the cell data to download whatever content...


    That's true. Last time I was lucky enough to notice this issue before AT&T charging me "upgrade fee". But today I am not lucky enough. As long as I am going to pay "upgrade fee" very frequently in the future, maybe I'd better shut down Internet connection at home, or turn off cellular data every time I am in WiFi circumstance manually. I tried to solve this problem via changing "cellular data" settings but failed, it seems iPhone 5 is not smart enough.

  • Earwigy1990 Level 1 (0 points)

    iPhone 5 owner reporting in. Just realized my 300-400mb of my data is disapearing each night as well. Yes on WIFI and yes everything updated. Talked to apple and they told me to restore my phone AGAIN.


    Still no fix for this?


    I have gone over my monthly 4Gb allowence already after 5 youtube videos and average browsing. W-t-F.

  • deggie Level 9 (52,652 points)

    Leave you iphone plugged in and see if the the data use drainage persists that night.


    Do you have an Exchange mail account on your iPhone.

  • Meature Level 1 (0 points)

    I leave phone plugged in at night and there is still leakage--although it may be less, not sure. Will experiment.  Has you experience been that plugging helps?


    Yes, using exchange.on both our phones.


    Earwigy--where are you located, who is service provider?


    We are verizon.

  • deggie Level 9 (52,652 points)

    And you have done the Verizon carrier update that was released to stop this type of thing? Check your carrier setting version Settings > General > About. Then contact Verizon to see if that is up to date.


    You might also try deleting your Exchange mail account and reentering it.

  • Meature Level 1 (0 points)

    Yes been in contact with VZ several times.  Have latest carrier version 13.3.


    Will try deleting exchange.


    I suspect data leakage is happening to every i phone 5 user on verizon but people just living with it if not resulting in overages for their plan.

  • Robert J McInnes Level 1 (5 points)

    This iOS 6 Setup Guide was posted in this forum way back in October.

    It may seem a bit tedious, but beleive me, it does work...

    iOS 6 introduced a number of "enhancement" which enabled you to "configure" what you want to stay in touch with instantly, and how you want your Apps to behave.


    My recommendation: work thru the list, it will provide you with some insight into what you have setup to allow stuff to go on in the background


    And: get into the habit of shutting down Apps when you have finshed with them...

    Double click the Home button, this will show you all the Apps running in the background.

    Tap and hold on one of the Apps,  then tap each one of the shaking App buttons to shut it down.

    [But you know this already, just do it as a routine for a while, and see what happens]




    PS: am just a User of iPhone, just lke you...

    And had an issue with Cellular Data Usage, like so many others who visited this forum when they first fired up iOS 6 on their new iPhone 5, or existing 4S, and 4...

    Most are now happy, issue resolved, and gone from this forum.


    iOS 6: Setup to Optimise Cellular Data Usage…

    Many of the iPhone 5 iOS default network Settings are intended to create best user experience and performance, by utilising available WiFi and high speed LTE and/or 4G Cellular Data networks.


    If your cellular data plan is limited, less than a One GB per month, it would be wise to work through the defaults, and turn off those services that are not important to you.


    Here is a guide, courtesy David and Olli, contributors to the Apple Support Community...


    Network Reset: reset the network connection…

    Make sure you know [or have saved] your various wifi passwords so you can quickly set them up again.

    Settings, General, Reset, Reset Network Settings.


    Cellular Data: turn it Off when you don't need it…

    This may sound messy, but it is really no more so than turning off WiFi, or Bluetooth, when you know you will not be using it.  Maybe Apple will move this setting to the front page of Settings, as they have done with Bluetooth in iOS 6

    Settings, General, Cellular, Cellular Data, Off.


    iCloud Backup: Turn it Off except when you need to do a Backup to iCloud…

    Otherwise iPhone will automatically do a Backup over WiFi and/or Cellular Network, while it is on Power, and sleeping.

    Settings, iCloud, Storage and Backup, iCloud Backup, Off.


    iCloud Documents & Data: turn off the use of the Cellular Data connection, until you need it…

    Settings, iCloud, Documents & Data, Use Cellular Data, Off.


    Location Services: make sure only the apps you consider critical are switched on…

    These are new Settings in iOS 6. 

    Settings, Privacy, Location Services, and turn Off each Application that is not important to you.

    Obviously you would tend to leave On Maps, Photo, Find Friends, Find My iPhone, Weather and Siri.


    System Services: apparently, some of these can be demanding on Cellular Network usage...

    Settings, Privacy, Location Services, and scroll down past the notes at the bottom of the list of Applications, and select System Services, and turn them all Off except Cell Network Search.

    If the Maps Traffic service is important to you, turn it On, but be warned it may be a bit of a hog.


    Notification Centre: work through each Application carefully, to determine what you really do need real time?

    Settings, Notifications, select each Application, and turn Notification Centre, Off, if you do not need Notification in real time…


    Siri: every iPhone User now understand how to use Siri…

    However you should be aware that Siri support has been expanded significantly in iOS 6, to include operation of your iPhone, to send text, make appointments, find restaurants, make bookings, and handle your dictation.  The catch is that Siri services contacts the Apple Server via the network to translate your voice, do the searches, and return your results.  You can leave Siri On but be aware of using Siri, when you are only connected via Cellular Data, and low on Data Usage remaining…

    Settings, General, Siri, Siri, On. by default,...


    There is also a new setting included in several Applications which allow you to turn off the Cellular Data Connection while they are active...

    Music: Settings, Music, Use Cellular Data, Off.

    iTunes and App Store: Settings, iTunes and App Store, Use Cellular Data, Off.

    Podcasts: Settings, Podcasts, Auto-Downloads, Use Cellular Data, Off.


    Mail: you can set up mail to better manage Cellular Data Usage, if it suits your operation…

    Settings, Mail, Contacts, Calendars, Fetch New Data, Push, Off, and set Fetch to Manually.

    And select, Advanced, and for each Mail Account, Select Schedule, Manually.


    And finally, here are a few more services you can probably do without, to further reduce Cellular Data usage…

    Advertising: Settings, General, About, scroll down to Advertising, Limit Ad Tracking, On.

    Diagnostics and Usage:  Settings, General, About, scroll down to Diagnostics & Usage, Don't Send, On.


    Some more tips…

    For heavy data transmissions sessions on WiFi, switch to Airplane Mode, then switch WiFi back on again while your session is in progress.  This mode will prevent iOS 6 from switching the Cellular Data midway through the session, should WiFi stumble….


    One user reported: Turn turn off all aspects of iCloud: Safari, Contacts, Documents and Data, etc.

    Do not remove the iCloud account, just turn off each service, then turn them all back on again…

    Another user found that the Google Account was failing to connect, using up 4 to 5 MB every time the connection failed.  Remove the Google account from iPhone, monitor for a while, then add it back again, an see if the problem is resolved.


    Also check your other applications; for example, BBC News has a a share statistics switch set to On.


    Revision: 121009 00

  • iinami Level 4 (1,440 points)

    There is also a new setting included in several Applications which allow you to turn off the Cellular Data Connection while they are active...

    Music: Settings, Music, Use Cellular Data, Off.

    iTunes and App Store: Settings, iTunes and App Store, Use Cellular Data, Off.

    Podcasts: Settings, Podcasts, Auto-Downloads, Use Cellular Data, Off.


    i don't have that option in music and i don't even have a podcast anything in settings...

  • Meature Level 1 (0 points)



    Good stuff, I'm giving it a shot. Thank you.

    Turning cellular off works but if that is the solution then clearly a defect of the phone. 


    iinami--i don't have that stuff either.

  • Robert J McInnes Level 1 (5 points)


    The Music: Settings, Music, Use Cellular Data, Off. option is now not visible on my iPhone 5...

    This may be because I have down loaded all Tunes from iCloud to my iPhone. 

    I did this to ensure I had all of my music on board while driving in the outback Western Australia, where cellular coverage does not exist.


    The Use Cellular Data option remains in iTunes & App Stores, and Podcasts.


    IMG_5239.PNG IMG_5240.PNG

  • Meature Level 1 (0 points)

    Tried all these steps.

    Unfortunately still leaking data.

    Leaked 1.3 meg from my phone in middle of night while on wifi. I have 3 apps--nothing open.


    Wife's phone had no leaks during the night.  She arrives at work just before 8:00, at 8:05 she is hit with 3.6 meg. She had not touched phone since the night before.


    These amounts can fit within our data plan but something is wrong.

  • deggie Level 9 (52,652 points)

    Do you have push or fetch email? Any notifications?

  • Meature Level 1 (0 points)

    I have push for an exchange account.

    I turned off most of the notifications in settings.  Don't think I have ever received a notification.

    I sometimes access gmail via safari--have not downloded app for this.

  • deggie Level 9 (52,652 points)

    If your iPhone is not plugged in at night and you receive emails you will see data charges.

  • Meature Level 1 (0 points)

    even if connected to wifi? 

    You may be right, last night not plugged in over a meg of data--but I can't really connect it to my email at least via Verizon's time stamp and my email time.


    Night before plugged in phone and less data so merits investigation.

    Any idea why?  seems like a design defect?

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