There are 3 types of way to activate: Via the protections settings, YouMail App settings, and by manually dialing the activation code.

Make sure wifi-calling is off when dialing the code.

As soon as you open the YouMail app go to the shield icon at the bottom of the screen. (should have a checkmark)

You will see this page in the screenshot

Select "Voicemail" in the top right-hand corner

Then you will select "Call forwarding"

So ahead and select that.

Then Select "Activate"

Follow the on-screen instructions:

Be sure to call the activation code. Once it is called you will get a message that says successful.

Ensure you have Wifi turned off your phone until the process is complete

Open the YouMail app

Tap the Menu (☰) icon on the top left corner of the screen

Tap Settings

Tap on Activate/Deactivate

Tap on Forward to YouMail

Tap on Activate

Follow the instructions

Tap on Verify YouMail is Working to confirm that the forwarding is working properly

Remember, do NOT answer the verification call if it comes through

Once you’ve successfully activated YouMail, read through the latest Tips and How-To Guides to get the most from your YouMail app!