When I look in the Contacts list via the Contacts icon I can scroll through all my contacts A through to Z.
However, when I go into contacts via the phone or via the SMS/Text app it only scrolls through A to a couple of the P contacts. Most of the contacts in P and all through to Z are missing.
Typing them in the search bar will find them but they dont appear in the scroll list.
I don't sync my phone with any other PCs or Apps, its all self contained.