What Businesses Need to Know About iOS 26

Update log

8/25/25: Updated to reflect Screen Unknown Sender feature default enabled for Brazil, China and India.

What Businesses Need to Know About iOS 26

In July 2025, Apple released the Public Beta for iOS 26 with a host of new communication features, including opt-in screening tools for calls and messages designed to reduce interruptions and protect users against unwanted communication.

When enabled, Screen Unknown Senders introduces text filtering, spam detection, and gives users more control over who appears in their conversations in Apple’s native Messages application. On the inbound calling side, Screen Unknown Callers, when enabled, automatically screens unknown callers, prompting them for more information, before notifying the user.

These changes could have broad implications for any business that uses SMS, MMS, RCS (Rich Communication Services) business messaging, or voice calling to reach their customers. Here’s what you need to know.

What to know

When enabled, the Screen Unknown Senders features sort incoming texts into folders, removing unknown senders and Spam from the main Messages view, and gives recipients the ability to control how messages are filtered.

Key message management features:

• Message folder menu: Incoming messages will be sorted into folders accessible from the new folder menu at the top right corner of the Messages view.
  • Messages: Saved Contacts, “Marked as Known” senders, and anyone the user has messaged before
  • Unknown Senders: Senders not saved in Contacts, the user has not messaged previously, and not “Marked as Known”
  • Spam: Regularly updated, user-input driven on-device protections tailored to target phishing attempts, deleted after 90 days
  • Recently Deleted: Recently deleted conversations, recoverable before permanent removal
  • Unread: Any not-yet-read message from any folder
• Notifications:
  • Unknown Senders: A badge will appear on the folder menu within Messages and show the quantity waiting to be read. No audio or haptic notifications will be provided.
  • Spam: messages will be delivered without any badge or notification.
• Time Sensitive messages: Using on-device models, the system will identify time-sensitive messages, like verification codes and order confirmations, and surface them for users in the main conversation list for 1 hour even if they are from unknown numbers.
• Allow Notifications option: Within the Unknown Senders setting, users can choose to have the system intelligently reveal other types of messages from unknown numbers, including:
  • Personal: Identified as not sent by businesses or organizations
  • Transactions: Including order updates, receipts, and confirmations
  • Promotions: Including general offers and updates sent to multiple recipients
• Feature defaults and visibility: Filter Spam will be enabled by default and Screen Unknown Senders will be disabled by default in all regions except Brazil, India and China. Users can enable and disable these features within Settings, which can now also be accessed using the “Manage filtering” shortcut from the folder menu in Messages. When Screen Unknown Senders is enabled by the user, Time Sensitive notifications will be enabled by default.
• User review actions: Users can reply, delete, or move messages to the main Messages folder by selecting the “Mark as Known” button from the Unknown Senders folder. Users can view messages in the Spam folder and “Recover” them to the main Messages folder.

When enabled, the Screen Unknown Callers feature automatically screens unknown callers before notifying the user. Once the caller shares their name and the reason for their call, the device rings and displays a real-time transcript. The user can decide if they want to answer, ignore, or block.

Key call handling features:

• Unknown caller screening: Any inbound call from a number outside the user’s Contacts, or with no prior user-initiated interaction, will be intercepted without audible or haptic alerts. Then the caller will be prompted to share additional details.
• Optional name and purpose prompt: These unknown callers will be asked to provide their name and the purpose of their call before the user is notified of the incoming call. If the caller does not supply information, the call will be silenced for the first 30 seconds before proceeding to notify the user of the incoming call.
• Visual screening and action: A visual transcript of the provided screening information will be displayed to the user and they can choose to answer, ignore, or reject inbound callers. Missed calls or calls the user chooses to ignore or reject will display transcribed caller name and reason in the user’s Recents call log.
• Feature defaults and visibility: Screen Unknown Callers will be disabled by default and will appear in Settings for users to enable or disable.

Why this matters to your business

Changes in message filtering and inbound call handling may decrease communication visibility and delay engagement.

Messaging

• Unknown Sender folder traffic: Users who enable this feature are expected to frequently check their Unknown Sender folder as they address the unread messages badge notifications and look for wanted messages from known brands and first-time senders. This could cause delays in user engagement, especially when this feature is first enabled.
• Undefined Spam criteria: Apple hasn’t disclosed the exact rules for sorting messages into Spam except to say they are targeting phishing attempts. This means that, occasionally, compliant messages could be routed out of the main inbox. Users can view messages in the Spam folder and tap “Recover” to move them to the main Messages folder.
• Protection for One-Time-Passcodes (OTP/2FA) and urgent notifications: Verification codes and time-sensitive alerts will notify the user and show up in the main Messages folder for the first hour, provided they follow recognized formats.
• No priority filtering for Verified senders: RCS Business Messages grab users attention by displaying the business logo and name on incoming messages. However, RCS Senders will only be filtered into the Messages folder if they are ‘Marked as Known’.

Voice Calls

• Screening impact metrics: Call screening complicates the measurement of customer engagement, as standard metrics like call length and human-answered detection may no longer reliably indicate user interaction. Transcripts and delayed responses can cause engagement indicators to fluctuate without clear network signals.
• Verified callers do not bypass screening: Branded calling increases human answer rates by displaying trusted business information both during the screening and in the visual call transcript. However, branded callers that are not in Contacts or have not previously engaged with a user do not bypass screening.

Considerations for preparation

These changes are complex and may affect your business in different ways. To help you navigate, we’ve outlined key recommendations below. For hands-on, customized assistance consider partnering with our experts in Twilio Professional Services for strategic considerations, and our Technical Account Managers (TAM) for applied practices.

Maintain Trusted Relationships

Establish an expected cadence of wanted communications to nurture loyal relationships and maintain recognition. Set clear expectations for message delivery from your app or other channels to influence users to check their Unknown Sender folder regularly and identify messages from your business as known.

Adopt Multichannel Strategies

Don’t rely solely on text messages or voice calling for your communications; connect with your customers across channels like email, push, and WhatsApp to ensure engagement. Use alternate channels to remind customers of message delivery or incoming calls for high-value content.

Request to be Added to Contacts

Instruct recipients early to save your contact or mark your number as known early in the relationship. Provide clear, simple opt-in instructions like: “Save this number as [Your Company] to receive updates.”

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Separate Your Use Cases

Use separate senders for promotional and transactional messaging use cases to increase “Mark as Known” likelihood for notifications and minimize the risk for increased filtering when sent alongside marketing messages. Minimize the number of short codes, long codes, and RCS Senders you use for each use case by user in order to maintain delivery once your number or sender is ‘Marked as Known’ or the user interacts with your call.

Use Clear and Recognizable Content Formats

Use structured layouts like Twilio Verify’s carrier-approved templates for SMS OTPs and simplify alert content to build trust and recognition for more consistent filtering from Apple.

Capture Attention with Branded Channels

Adopt RCS Business Messaging to stand out in the Unknown Sender folder by displaying your brand name and logo alongside unbranded SMS messages. Implement Branded Calling to display your brand in the Recents call log alongside unbranded callers.

Track Engagement and Adapt

Prepare for potentially lower or delayed engagement rates and inconsistent call lengths. Add RCS Business Messaging in order to analyze read receipts, which are enabled by default for iOS users. Utilize Messaging Insights and Voice Insights to track changes in delivery, engagement, connection rates and call times.

Staying ahead of iOS 26

As the global leader in cloud communications, Twilio is committed to simplifying complexity for businesses navigating an evolving mobile landscape. Our platform empowers you to accelerate time to value and create truly differentiated customer experiences—backed by robust security, compliance, and privacy at every layer.

We are proactively collaborating with Apple, global carriers, and rigorously testing each iOS update to keep you ahead of industry shifts. Twilio’s experts are closely monitoring feature defaults, screening criteria, and the treatment of verified communication channels to then translate those insights into actionable strategies for our customers.

You can rely on Twilio for timely, transparent updates and practical guidance, helping you adapt quickly to change and deliver exceptional communications that stand out from the competition. We’re here to help you build for what’s next—securely, seamlessly, and with confidence.

James Lapic is Senior Director of Product Management at Twilio where he oversees the global relationships with Carrier and OTT partners including Apple, Meta, and Google.