Users running ActiveSync on iPhone

Question

The problem I'm having is that contact emails show up differently on the iPhone if it's an Exchange contact instead of a non-Exchange contact. To see an email for an Exchange contact, the label associated with the email must be set to NULL. To see an email for a non-Exchange contact, the label associated with the email must be set to a non NULL value. I'm developing a program that updates email addresses of contacts from outside sources and I need to know how to set the information for the contact in order for the user to see the changes. For what I'm doing, setting the email twice (one with a label and one without a label) is not an option since it may cause duplicates down the road.
Is there a way to figure out if a user is running Exchange ActiveSync on their iPhone or if you can distinguish if a contact originates from Exchange or not? (Looking at the current set of emails for NULL labels doesn't always work because a contact may not have an email)

Answer 1

Here are a few things that I did that were suggested in older threads. They may not be necessary, but they don't hurt either:
* Certificates: you need two them. One is your personal one that you [download]. The other one is the WWDR Intermediate Certificate. When I open 'Keychain Access' and click on 'Certificates', it should show those to. Your personal one should be called 'iPhone Developer: FirstName LastName'. (I assume this is ok for you, but others may find this useful.)
* App Id: different people have pointed out that you should make your App Id precise, but with not more than 3 levels. The docs suggest using '*' as only path during development, but the docs may be out of date on this one. So in my case, I have ID: ABCFDEF123.com.mycompany.appname. That's it. I've noticed that you'll only be able to have exactly 1 application on your device at the same time with this ID, but that's ok for now.
* Create your provisioning profile with all this.
I've then done this:
- quit Xcode
- delete all profiles out for ~/Library/MobileDevice/Provisioning Profiles
- copy the new one in this directory. I didn't do drag and drop because some threads indicated that this doesn't always work.
- remove previous profile from device (iPhone->Settings->General->Profiles->Delete)
- start up Xcode
- Start up Organizer
The new profile should now be visible in Organizer and be downloaded to your iPhone.
In the Info.plist, set the Bundle Identifier to com.mycompany.myapp.
In Build options:
Code Signing Identity -> 'iPhone Developer: FirstName LastName'
And now suddenly the new profile did show up.
After that it just worked.
Now some have also indicated that even if the profile doesn't show up, you can still get it to work by forcing it in (just double-click on "Code Signing Provisioning Profile" or somewhere in that neighborhood) and fill in the name. I can't confirm if that solves it because when I did so, my certificates were still incorrect...
Good luck!