This post reflects confirmed behavior from the iOS 27 release.

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Every September, Apple ships a new iOS and the political and nonprofit texting world holds its breath. iOS 26 reorganized how unknown sender inboxes work. iOS 27 changes something more visible: how media actually renders on screen.

Here is what changed and what to do about it.

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What Actually Changed

iOS 27 affects how images, videos, and other files appear in the Messages app for contacts who have not saved your number.

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Images, Videos, vCards, and other attachments get blurred. A contact who hasn't saved you or replied to you will see your image obscured with a "This sender is not in your contact list" label. One tap reveals it. Delivery is unaffected. But you've lost the immediate first impression.

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In Some Cases, attachments show up as “file chips”. Depending on the file, and whether or not the contact has sent an inbound message, the attachment will not render. In its place will be a “file chip” describing metadata about the file, such as the file name, extension, and its size.

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The exemption: Neither change applies to contacts who have saved your number. Those contacts see everything exactly as they do today. 

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What "Known Sender" Actually Means

A contact’s iPhone messaging app will automatically treat your number as known if they've saved it in their contacts, rendering all subsequent media attachments exactly as expected. Inbound messages from the contact to your number also dramatically increases the likelihood that your number is treated like a known sender. That includes driving opt-in keywords, double-opt-in flows, a voting plan response, an RSVP, a question to a volunteer—any inbound message counts. Programs built around real two-way conversation are better positioned than programs using MMS primarily as a one-way send.

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Five Things to Do Now

1. Lead with SMS for cold contacts. For contacts who haven't replied yet, start with a plain text message. No image, no video. An SMS opener that invites a response costs nothing, and the moment they reply, they're a known sender for everything that follows. 

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2. Send vCards early. A vCard delivers your organization's name, number, and logo as a one-tap save. The more contacts who have your vCard saved, the more of your rich-media messages will render as intended. Attach your vCards in automations and library actions as follow-ups to their inbound messages; get them out in the wild. 

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3. Flip the sequence for image-heavy sends. Rather than opening with a visual for your full list, send a text first that references the image and invites a reply. Something like “...and if you text YES, I’ll happily send you more policy details!” Then, send the MMS after they've engaged. 

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4. Segment MMS sends by engagement history. Use Contact Query to filter for contacts who have sent at least one inbound message before sending video or image-heavy content. That cohort will typically see your media as intended. Everyone else gets the SMS-first approach.

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5. Organize your program so contacts are the ones reaching out to you initially 

There’s a special trick to get contacts to text you. We strongly recommend it! We’ll call it the “TEXT ME” click-to-text button, and you can use our tool to make one. What it does is it creates a button you can embed on your website, that when clicked, prefills a keyword message in your contact’s handset, targeted to your texting channels.

“But what if they visit my site from their desktop/laptop? They can’t text from there.”

No problem. The embedded code in our tool detects what kind of device the contact is visiting from, and will display a QR-code that, when scanned, pre-fills the drafted message just like the button! And if you connect it to your org, you can set up auto-responses to those messages.

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The tool generates the code. You can put it everywhere (and you should), including the back of wallet cards. 

One More Thing: Channel Diversification

iOS 27 is a useful reminder that not everything has to live in the SMS inbox. Mobile Wallet Cards sit in Apple Wallet. Push notifications go directly to the lock screen. None of the iOS 27 rendering changes apply. For high-value supporters where persistent presence matters between campaigns, a card on their phone is worth considering alongside your texting program.