iPhone 6 not receiving office 365 email with WiFi turned on

We have 1 iPhone in the company and last week the user wasn't getting any company email until she turned off WiFi.  I'm not an Apple user so I'm not clear why this would happen.

On our Android phones we don't use WiFi to get email.  So my question is does the iPhone require WiFi to get Office 365 email?  Or is it better to not use WiFi for Office 365 email
J.R. SitmanIT DirectorAsked:
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mudcow007Commented:
was the user able to access websites with WiFi turned on (using mobile data)?

when it was turned off was she able to browse the internet?
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J.R. SitmanIT DirectorAuthor Commented:
Unfortunately I don't have the answer to either.
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Kyle SantosCustomer RelationsCommented:

1.

If you have used the same credentials on another phone prior to the iPhone, they are probably still cached in the Exchange server, and the default number of devices allowed by Exchange Server is 10, some organizations make that fewer.

If you have access to the Exchange/Outlook Web Access: log in and go to Options > See All Options > Phone.
You should see a list of devices that have been setup with that email account, delete any unneeded ones.

2.

Also, if active sync is not enabled connection will not also establish from phone to server.  Try to remove the account from the device and then restart and reconfigure the account.

You can open up the EMC (Exchange Management Console).  

Go to Recipient Configuration > Mailbox

Right-click the Mailbox for the user and select properties

Click on Mailbox Features Tab

Should be able to see everything that is enabled for the user (POP, MAPI, Archive, OWA, ActiveSync)
Source

Let us know if that works or not.
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J.R. SitmanIT DirectorAuthor Commented:
I'll post later today
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J.R. SitmanIT DirectorAuthor Commented:
Deleted the old devices seems to have worked.

Thanks.
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J.R. SitmanIT DirectorAuthor Commented:
Thanks
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Kyle SantosCustomer RelationsCommented:
You're welcome!  I am glad that worked for you.  Take care.
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