We are running an exchange 2013 server and a few users have iphones (latest firmware)
Only 1 user has a strange problem .. when he gets emails from 1 specific person inside the company the display name shows as the company not the user.
On his desktop and webmail it shows correctly.
This person can send to anyone else in the company with a mobile device and it shows theur correct exchange display name (ie: bob jones) but only when sending to this 1 person does it show the company name (ie: contoso)
I have tried deleting the account from his iphone and readding and initially this worked until we exited mail and went back in and then once again it showed the company name
Go into the Mail app
Compose a new email
Start typing the name of the person
Are there duplicate entries?
If there are, then click the i icon on one of them, and scroll to the bottom.
Click Remove from recents (of the one you don't want to keep)
Let me know if that works or not.