Your plan will not be billed for any minutes used in a call to 911, however there is a standard Emergency 911 Charge that all wireless carriers must charge.
How Does Auto Pay Work?
How Does Monthly Billing Work?
Can I Restore My Account if I Miss a Payment?
What payment methods does US Mobile accept?
What Do I Do If I Run Out of Talk, Text, or Data In The Middle of The Month?
What Taxes and Fees Will I Have to Pay with US Mobile?