Samsung Galaxy Note® 4 - Network Mode Settings

From a Home screen, navigate: Apps > Settings.
These instructions apply to Standard mode only.
From the Wireless and networks section, tap More networks.
Tap Mobile networks.
Tap Network mode.
Tap the appropriate setting:

Global

This is the preferred setting for most locations.

LTE/CDMA

This setting should only be selected if experiencing service issues in locations that offer multiple network types and only LTE/CDMA is needed.

GSM/UMTS

This setting should only be selected if experiencing service issues in locations that offer multiple network types and only GSM/UMTS is needed.
The preferred international carrier is automatically selected.
You can manually select an alternate carrier but it may require as many as 6 registration attempts with that carrier prior to successful registration.