US Cellular Call Forwarding
Conditional Call forwarding (CCF) is a necessary feature in order for your carrier to work with YouMail. US Cellular only offers Conditional Call forwarding on their total plan packages but not on any of their pre-paid plans. This means if you have a pre-paid plan with US Cellular you will need to change to the Total plan.
Once you have a total plan on your account, you can download the YouMail app and easily complete your activation.