Why does an iPhone/iPad default calendar change?

Hi,
I'm working with several hundred iPhones and iPads, and I'm having difficulty understanding what causes someone's default calendar to change.
I push an ActiveSync profile through an MDM solution, and on a brand new phone that becomes the default calendar.
Sometimes when I deal with a device later, I see that the default calendar has been changed to either the iPhone calendar, or an iCloud calendar.
What I want to know is *WHY* a calendar changes? Does it change when someone:
adds an iCloud account
adds the gmail/yahoo/outlook app
adds another native mail account
whenever there's an activesync issue
connects to a computer with iTunes
accepts a meeting invite
Really any information or experience anyone can provide is helpful. I want to find out what circumstances or changes would require someone to verify their default calendar.
thanks!

That's actually become our resolution is to have them change it back. Thanks for the suggestion though.
Unfortunately I can't tell what changes it in the first place. I've several devices of my own, and immediately after enrolling in the MDM, one of the devices has the calendar set as the activesync one, and another is the on-device calendar.
There has to be something that triggers this, but I haven't been able to effectively reproduce the problem, but I would expect that the ActiveSync calendar should become the default calendar, but perhaps my expectations are misplaced.

Similar Messages

  • Why does my LG Cosmos 2 calendar change the start time to the same as the end time?

    This does not happen all the time but often enough to be a pain.  When I enter a new appointment in the calendar sometimes the phone changes the start time to what I entered as the end time.  I thought maybe it was me but it happened twice today and I watched carefully to make sure I was entering it correctly.  I was and it is the phone making the change.  How do I fix this?

    Hi AyaniB
    It's been doing it for some time. It seems to be random in occurrence. The day I made the post it happened three times. Since then I have been watching carefully and it does not seem to have happened again. Am I missing any phone updates or anything? How do I check that?
    Thanks for your help.
    Dave Zamzow

  • Why does my iPhone calendar send invites out sometimes

    Why does my iPhone calendar send out invites sometimes & sometimes it does not.  I' m not a
    Gmail user

    I fix this problem - I changed all email accounts to default iCloud and the invites appeared back on my calendar again

  • Why does my iPhone calendar show Argentinian holidays?

    Why does my iPhone calendar show Argentinian holidays?

    In settings, general, international, look at your language settings. Are they correct? Also what keyboards in general do you have selected?

  • Why does my Iphone 4 keep telling my that my apple password is incorrect even after I have just changed and rest my password?

    Why does my Iphone 4 keep telling my that my apple password is incorrect even after I have just changed and rest my password?

    Sign out of your Apple ID then back in again with changes
    also delete ICloud then sign back in again with new password.
    bsydd uk

  • Why does my iphone 3gs shut down when battery gets to 80%?  have installed new battery and nothing changes?

    Why does my iphone 3gs shut down when battery shows 80%.  a couple of months ago is shut down at 60% but has continually gotten worse.  this was before 5.0.  i took it to a repair man and he tried a used battery, a new battery, and the original battery.  nothing helped.  5.01 didnt help either.  What is my problem?

    Fully discharge the battery (till it shuts down and won't turn on) and then fully recharge it (100%).  This will recalibrate the battery meter.  You may need to do this a few times.

  • Why does my iPhone ring when my iPad receives a text

    Why does my iPhone receive the same texts as me iPad

    Because they share the same iMessage account and the same "deliver to" address(s).  You can edit the receive addresses to be unique, but then people will need to know which one to send to to get the right device.  The whole point of iMessage is that your messages can be received on any iOS (or now OS X 10.8) machine that you set up with the same iMessage account and receive aliases.
    You can also set up the devices with completely different iMessage accounts, by using different AppleIDs to create the accounts.

  • TS1363 Why does my iphone stall on preparing to sync?

    why does my iphone 4, stall on preparing to sync?

    In addition the the step it tells you what it is doing during that step. If it is backing up that is taking a long time try deleting your backup, then just back up (rather than syncing). The first backup may take a while, but after that is should be fast. If it is Syncing see if you can identify the sync step - contacts, calendar, photos. If you have a lot of photos in Albums (not camera roll) that should take a long time whenever you change photos, but should not any other time.
    How are you syncing contacts and calendar? If you have a lot of contacts (>1,000) and the change frequently that's a possibility Likewise for calendar entries.
    Beyond these I'm as mystified as you. Earlier versions prior to 3.1 commonly took a long time to sync, but more recent versions generally ahve not had a problem.

  • Why does my iphone on the top left hand top corner keep saying searching ?

    why does my iphone on the top left hand top corner keep saying searching ? i have changed my sim and it still isnt activating

    Did you already check the general troubleshooting mention in this article?
    If you see No Service in the status bar of your iPhone or iPad - Apple Support
    Get help activating your iPhone - Apple Support

  • Why does my iPhone keep notifying me of upcoming birthdays on Facebook, I can't stand it. How do I get this off?

    Why does my iPhone keep posting notices about upcoming birthdays from fb? How do I get rid of it?

    It's all coming from Facebook.
    Either a notification is turned on or somehow these "events" have been synced to the calendar.
    The "how to fix" would depend on the notification.  If it's coming from the Facebook app, again, fix the notifications in the settings for your facebook account.  Since you're also getting emails, I believe this is where the notifications are coming from.
    If they are coming from the calendar app, then either change the notifications for each event or delete the events.

  • Why does my iphone have an itunes icon and a charger shown

    why does my iphone have an itunes icon and a charger shown

    Try this
    If you can't update or restore your iPhone, iPad, or iPod touch
    https://support.apple.com/en-us/HT201263
    Best of Luck

  • Why does the English keep defaulting back to US and not British

    Why does the English keep defaulting back to US and not British.
    This is clear enough it does what it says in English British English

    Where do you get this problem?
    Is this with the spell checking dictionary or with the language setting?
    *Tools > Options > Content > Languages
    If you do not keep changes after a restart or otherwise have problems with preferences, see:
    *http://kb.mozillazine.org/Preferences_not_saved

  • HT4859 Why does cloud on iPad ot use 13.4 GB is space shown in account?

    WHy does cloud on iPad not use 13.4 GB in space shogun in account? Can download size be changed?

    Welcome to the Apple Community.
    It will delete your iCloud data on the iPad only. (It may not be a lot)

  • Why does my iphone shut down my computer when i have pictures on my phone

    Why does my iphone shut down my computer when I plug into the USB port when I have pictures on my phone.  My computer says it has found a new digital camera - then my computer shuts down.

    Thank you Lawrence.  I forgot I used to run a Logitech webcam several years ago and I hadn't uninstalled program when I changed the camera to a different one.  I uninstalled the camera and it now seems to accept my phone with pictures onto my computer without shutting my computer down. I really appreciate your help with this problem.

  • Why does my iphone 4 ios 6 not connect to itunes store or allow Passbook to do the same?

    why does my iphone 4 ios6 not connect to itunes store nor allow Passbook to do the same?

    Same here........ I'm using my iPhone, iPad and MacBook pro and I "cannot connect to iTunes"............my Internet connection is great......... The apple store might be doing some update!

Maybe you are looking for