A:AnswerIt came with a Sim card already. You just need to add money to your account. The prepaid card works but you can add your cc info as well for on the go and if you need to purchase more data.
A:AnswerYou can pay ala cart when you need the device or set up a monthly renewal payment.
These are the costs, data limit, and expiration time:
$100.00 10GB 2 Months
$60.00 5GB 2 Months
$35.00 2GB 2 Months
$20.00 1GB 1 Month
$15.00 500MB Weekly