How to Send a Fax to USCIS from iPhone (Immigration Documents)

Why USCIS still uses fax

The U.S. Citizenship and Immigration Services handles millions of case inquiries every year. Many of its offices still accept, and sometimes require, faxed documents for specific requests.

Fax is used for attorney correspondence, evidence submissions, and responses to Requests for Evidence (RFEs). It creates a dated transmission record, which matters in time-sensitive immigration cases.

Email is not universally accepted for case submissions. Fax remains the fastest way to get paper documents into a USCIS officer's hands without mailing them.

The good news is you do not need a physical fax machine. Your iPhone handles the whole thing.

USCIS fax numbers to know

USCIS does not publish a single universal fax number. The right number depends on your service center or local field office.

Common fax destinations include the National Benefits Center, individual field offices, and the USCIS Contact Center for attorney inquiries. Always verify the number directly on the USCIS office locator before you send.

Some important points to double-check:

• Service center fax numbers differ from field office numbers.
• Numbers change periodically. Use the USCIS website, not a cached third-party page.
• Include the full 10-digit number when dialing from an app (no need to add a "1" prefix in most fax apps).
• If your attorney provided the number, confirm it matches the current USCIS listing.

Writing down the number before you open the app saves time. One wrong digit means your documents go nowhere.

What you need before you start

You need three things: your iPhone, the correct USCIS fax number, and your documents in a digital format.

Documents can be PDFs, JPEGs, or PNGs. If you only have paper originals, use your iPhone's built-in document scanner in the Files or Notes app to create a clean PDF first.

For multi-page submissions, combine everything into one PDF file. Most fax apps, including Faxend, accept multi-page PDFs without any extra steps.

You also need a fax app. The Faxend iPhone app is available on the App Store. If you prefer the browser, faxend.com/send works on iPhone Safari too. No account is required for a one-off send on the Basic plan.

How to send the fax from your iPhone

That's the whole process. No fax machine, no phone line, no trip to a print shop.

Tips for preparing immigration documents

USCIS officers process high volumes of faxed documents. A clean, readable submission gets processed faster.

Scan at 200 to 300 DPI. Lower resolution produces blurry text that can cause delays or requests for resubmission. The iPhone's built-in scanner in the Notes app produces acceptable quality for most documents.

Keep file sizes reasonable. Very large PDFs can fail mid-transmission. If your document is over 20 MB, compress it using a free tool before uploading.

Always include a cover sheet as the first page. List your name, date of birth, A-Number, the case or receipt number, and a brief subject line such as "Response to RFE dated [date]." This single sheet can save days of routing delays.

Do not fax originals that USCIS has asked you to mail. Some document types, like original birth certificates or original passports, must be physically mailed. Fax is for copies and correspondence unless the specific instruction says otherwise.

If you're sending from the Faxend iPhone app, you can attach multiple files in one session. Arrange them in the correct order before sending.

Confirmation and keeping records

Immigration cases can span months or years. A fax confirmation slip is evidence that you submitted documents on a specific date. That matters if USCIS later claims it never received something.

Faxend's Standard and Pro plans store your fax history automatically. You can pull up any past transmission and download the confirmation at any time.

On the Basic one-time plan, you receive an email confirmation after the fax delivers. Save that email immediately. Forward it to yourself with a clear subject line like "USCIS fax confirmation [date] [case number]."

Some immigration attorneys recommend sending the same critical document twice on different days and keeping both confirmations. This is a personal choice, but the cost of a second $2.99 Basic send is low compared to the risk of a missed deadline.

Store your confirmations in a dedicated folder, either in email or a cloud drive. Immigration paperwork accumulates fast. Organization from day one prevents headaches later.

Security and privacy for sensitive documents

Immigration documents contain some of the most sensitive personal information that exists. Passport numbers, visa histories, financial records, and biometric data all appear in typical USCIS submissions.

Faxend encrypts every transmission with AES-256 encryption, both in transit and at rest. This is the same standard used by financial institutions and healthcare providers.

While HIPAA specifically covers health information, Faxend's encryption practices apply to all documents regardless of type. If you're also sending health-related records as part of a USCIS medical examination submission, Faxend is HIPAA-ready on every plan, including the $2.99 Basic tier.

Avoid sending immigration documents over public Wi-Fi without a VPN. Even with a secure fax app, your phone's connection to the network is a separate layer worth protecting.

Do not use free fax services that display advertising or lack a clear privacy policy. If the service is free with no explanation, your documents may be the product. Check the Faxend pricing page to see what each plan covers.

For law firms and immigration consultants handling multiple clients, the Pro plan at $19.99/month includes a dedicated inbound fax number and priority delivery. You can also request a Business Associate Agreement if your practice handles health-adjacent immigration cases like USCIS medical exams.

For a broader look at secure iPhone fax options, see our guide to the best fax apps for iPhone in 2026.

If you need to receive fax responses from USCIS or your attorney's office, the Pro plan gives you a dedicated inbound number. Read more about how that works in our guide to receiving faxes online.

Written by Faxley, Faxend's editorial voice on document workflows and digital communication.

Frequently asked questions

Does USCIS accept faxes from online fax services?

Yes. USCIS receives faxes at its published office numbers regardless of whether the sender uses a physical machine or an online service. The receiving equipment cannot distinguish between the two. What matters is that the fax number is correct and the document is legible.

What fax number should I use for USCIS?

There is no single USCIS fax number. The correct number depends on your service center or local field office. Always look it up on the official USCIS website at uscis.gov before sending. Numbers change, and using an outdated number means your documents go to the wrong place.

Can I send a multi-page immigration document from my iPhone?

Yes. Combine all pages into a single PDF before uploading to Faxend. The app and web interface both accept multi-page PDFs. Scan each page at 200 to 300 DPI for the best readability at the receiving end.

How do I get proof that USCIS received my fax?

Faxend provides a delivery confirmation after each successful transmission. On the Basic plan, you receive an email confirmation. Standard and Pro plans store your full fax history so you can download confirmations at any time. Keep this confirmation with your immigration file.

Is it safe to fax passport copies and visa documents from an iPhone?

It is safe when you use a service with strong encryption. Faxend uses AES-256 encryption for all transmissions on every plan. Avoid using free fax services that lack a clear privacy policy, especially for documents containing passport numbers or biometric data.

Do I need a monthly subscription to send one fax to USCIS?

No. Faxend's Basic plan costs $2.99 as a one-time payment and covers up to 5 pages with a 30-day credit. No account is required. This is enough for most single USCIS submissions. If you need to send and receive faxes regularly, the Standard plan at $9.99 per month includes fax history and HIPAA compliance.