Merging and separating contacts
When you have two or more entries for the same contact, you can merge them into a single entry. You can also separate contacts that were merged.
Contacts, and then tap the contact entry you want to merge with another entry.
Options, then tap Manage contacts > Merge.Once entries have been merged, Separate becomes available in the options menu to allow you to separate the merged entries.
Contacts, and then tap the contact entry you want to separate.
Options, then tap Manage contacts > Separate.