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How to send a document for signature from a phone

You don't need a laptop to send something for signature. Here is how uploading, placing fields, and sending works entirely from a phone browser.

Updated · 3 min read

No app required

Signavos runs in the phone's browser, not a separate app. On iOS that means Safari or Chrome; on Android, Chrome or your default browser. Sign in the same way you would on desktop — a one-time email code, a magic link, or Google — and you land on the same dashboard, laid out for a smaller screen.

Uploading a PDF from your phone

The upload button on the dashboard opens your phone's normal file picker, so you can pull a PDF from wherever it already lives:

  • iOS: the Files app, iCloud Drive, or a cloud app like Google Drive or Dropbox if it's installed.
  • Android: the Files app or any cloud storage app you use.
  • Either: if you only have a paper document, use your phone's built-in document scanner (in the Notes app on iOS, or Google Drive's scan feature on Android) to produce a clean PDF before uploading — a photo saved as a JPEG will be rejected, since only PDF is supported.

The file is limited to 40 MB, which covers essentially any scanned or exported document short of a very long one with embedded images.

Placing fields with touch

Once uploaded, you drag fields — signature, date, name, initials, text, checkbox — onto the document the same way you would with a mouse, just with a finger. Turning the phone to landscape gives more room to see the page and place fields precisely, especially on a densely formatted PDF.

Everything you place is validated the same way as on desktop, and preparing a document — placing fields, saving a draft — costs nothing. The credit is only debited when you actually send.

What the recipient sees on their phone

The signing experience is built mobile-first, meaning it was designed for a phone screen and works just as well on a laptop, not the other way around. Your recipient gets the same email link regardless of device, opens it in their own phone browser, and signs by drawing with a finger, typing their name, or uploading a signature image. No account, no app, on either side. See how to sign a document without creating an account for their perspective in full.

A few practical tips

  • Convert scans and photos to PDF before uploading — Signavos only accepts PDF.
  • Use landscape orientation when placing fields on a form with a lot of text; portrait is fine for reviewing and signing.
  • If you're sending on a weak connection, upload once and wait for confirmation before placing fields — re-uploading a large file repeatedly wastes time, not credits (nothing is charged until send).

Signavos runs in your phone's browser, so you can send a PDF for e-signature from your phone without installing an app or paying monthly.

Frequently asked questions

Do I need to install an app to send or sign on mobile?
No. Both sending and signing happen entirely in the phone's browser.
Can I upload a photo of a document instead of a PDF?
No — only PDF files are accepted, up to 40 MB. Use your phone's built-in scanner feature to turn a photo into a PDF first.
Is placing fields harder on a small screen?
It's more precise in landscape orientation. For a form with many fields close together, zooming in before placing each one helps.
Does the recipient need a specific phone or browser?
No — any modern mobile browser on iOS or Android works. There's nothing to install on their side either.

Send your next document without a subscription.

Upload a PDF, place the fields, send. Your recipient signs without an account and you pay per signature — nothing renews.

Start paying per signature