Collect the records before choosing a time. Have your identity document available, the federal tax-purpose evidence ready and a list of questions about any mismatch. If an earlier ITIN or SSN appears on an old notice, raise it before treating the case as a new application. Renewal and first-time application are different choices on W-7.IRS
For the call, use a stable connection and a place where you can discuss your records privately. Confirm which document must be shown and which evidence the reviewer needs beforehand. A photo sent in advance may help preparation, but the photo is not a substitute for the required authentication. Avoid editing an image to hide relevant details; if something is unclear, obtain a readable version.
Make the name on the application a deliberate check. Compare the passport, tax return, mailing address and any earlier IRS record. Write down questions about married names, multiple surnames or an address that uses a different alphabet. Fixing a preventable mismatch before signing is simpler than explaining several conflicting versions after submission.
If another family member also applies, confirm their separate requirements and participation in advance. Do not assume that one adult's interview or one person's passport establishes every applicant's identity.