This article explains how to change the preset friends emojis in the Snapchat address book. These icons appear next to contacts in the chat list based on how often you exchange snaps with each person.
Steps
Step 1. Open Snapchat
The icon depicts a white ghost on a yellow background.
Step 2. Swipe down to open the profile
Step 3. Tap the settings icon in the top right:
depicts a gear.
Step 4. Tap Manage preferences
It is located in the section called "Additional Services".
Step 5. Tap Emoji Friends to open a list of emojis
Each has a short description explaining when the icon appears.
Step 6. Tap the emoji you want to change
A list of potential emojis that can be used for this icon will open.