This article explains how to set up voicemail on all Android phones, regardless of manufacturer (Google, Samsung, etc.).
How to Set Up Voicemail Settings on an Android Phone | Incoming Call Recording Options
The most common way to set up your voicemail is to call your mailbox directly. You can access your voicemail by calling your phone number directly or by using the speed dial number built into most phones.
Tap the keyboard icon at the bottom of the screen.
Tap and hold the number 1 until the call begins. You can also enter your full phone number and tap Call.
