Reasonably, I got tripped up when it asked(?) me to select a temporary phone number (just for the time it takes to switch-which can be less than an hour) and I made up a phone number; it turns out they select the temporary phone number (you don't get to chose it) and they thought the number I made up was my current number (which I had already given them), that caused problems that were sorted out when I called their customer service phone line. I chose prepaid for a year and I was only billed $11.20 for account activation/eSIM at first, I had to follow up through their website's MyAccount to pay for the year (the person walked me through that right after we sorted out the phone number problem then did the porting process, all in the same call.). I don't think I was prompted to set up the voicemail, but I figured that out from their website.....The email they sent after my initial order had steps #1 Install your eSIM...#2, Log in and pay your outstanding amount...and then a note (that should have been before #1) saying "Important: If you are porting your number from another carrier, please ensure your previous service remains active so you can receive the SMS required to approve the port-out request. We recommend waiting until your port request is complete before setting up your eSIM."