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QR Code That Opens a Pre-filled SMS Text Message

An SMS QR code opens the phone's default messaging app with a recipient number and message text already entered, so the person scanning only has to tap send. It's the fastest way to collect an opt-in or start a text conversation from a printed source.

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Common Use Cases

📲

SMS Opt-in Campaigns

Pre-fill the message with a keyword like 'JOIN' so subscribers can opt into a texting list with a single tap.

🚐

Quick Customer Replies

Put the QR on a service van or storefront so customers can text you directly instead of calling.

🎉

Event RSVP by Text

Pre-fill 'YES' or 'RSVP' as the message so guests can confirm attendance in one scan and one tap.

🎁

Competition & Giveaway Entries

Use a pre-filled entry keyword so participants can enter a text-to-win giveaway without typing anything.

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Frequently Asked Questions

How does a pre-filled SMS QR code work technically?+
It encodes an sms: URI, such as sms:+15551234567?body=Hello. When scanned, it opens the default messaging app with that number and message pre-loaded, ready for the user to review and hit send.
Why does the SMS link format differ between iPhone and Android?+
iOS expects an ampersand before the body parameter (sms:+15551234567&body=Hello) while Android expects a question mark (sms:+15551234567?body=Hello). This is a known platform inconsistency in how each OS parses the sms: URI, so some links only pre-fill correctly on one platform.
Does the recipient's carrier or SMS plan affect whether the QR code works?+
No — the QR code only pre-fills the message in the app. Whether the text sends and what it costs depends entirely on the sender's own phone plan, exactly as if they had typed the message manually.
Can I leave the phone number blank and only pre-fill the message?+
Yes — omit the number and the QR will open a new message screen with the body text filled in but no recipient selected, letting the user choose who to send it to.
Is SMS or WhatsApp better for a QR-based opt-in campaign?+
SMS QR codes work on any phone without installing an app, making them more universal. WhatsApp QR codes are better if your audience already communicates with you there and you want the message history kept in one thread.

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