USCIS announced that applicants, petitioners, requestors, and beneficiaries may now call the USCIS Contact Center (800-375-5283) to reschedule their biometric services appointments scheduled at a USCIS ASC. Previously, applicants had to submit requests in writing to reschedule biometrics appointments. For tips to help you navigate the USCIS Contact Center, see:
Tips for Requesting to Reschedule an Interview or Reschedule Biometrics
Tips for Requesting an Expedite (adjudication or biometrics)1
Tips for Requesting an InfoPass/InfoMod Appointment