How can I prevent scam texts on my iPhone 16 Pro Max?

On an iPhone, you can significantly reduce scam messages, but there is no single iPhone setting that blocks all scam messages worldwide. Scammers can use ordinary phone numbers, email addresses, changing sender IDs, and internet-based messaging services, so the best approach is to combine Apple's filtering features with your carrier's spam protection.

1. Filter unknown senders in Messages
   1. Open Settings.
   2. Tap Apps → Messages.
   3. Look for Screen Unknown Senders or the available filtering options.
   4. Enable the option to screen or filter messages from unknown senders, if available.
   5. This helps separate messages from people who are not in your contacts. It does not identify or block every scam, and legitimate messages from unknown senders may also be filtered.
   6. 
2. Block and report scam messages
   1. Open the suspicious conversation in Messages.
   2. Tap the sender's name or number and look for Block Contact.
   3. If Report Junk appears, use it to report the message.
   4. Blocking a sender helps stop further messages from that particular sender. Scammers can switch numbers, so blocking alone is not a global solution.
3. Enable SMS spam filtering
   1. On supported iOS versions, particularly useful in India:
   2. Open Settings → Apps → Messages.
   3. Tap Unknown & Spam or the available filtering settings.
   4. Under message filtering, select an available spam-filtering option.
   5. If you install a third-party SMS filter, enable it here.
   6. Apple's built-in filtering in India can sort unknown SMS messages into Transactions and Promotions. Third-party filters may identify additional spam, but review their privacy policies before granting access to message content. 
4. Reduce unwanted calls and other messages
   1. Phone calls: Go to Settings → Apps → Phone and enable the available screening or silencing option for unknown callers.
   2. Email scams: Use your email provider's junk and phishing filters.
   3. WhatsApp scams: Open the sender's profile and choose Block and Report. WhatsApp has its own controls; iPhone's Messages filtering does not cover WhatsApp.
   4. Carrier-level protection: Ask your mobile network provider about international SMS spam filtering and fraud protection.

Settings

Apps

Messages

Unkniwn Senders

Filter Spam > ON

Group Text/Chat messages on iPhone can come in various formats and types, each with its features and purposes (Which one you are referring to is not clear here):

1. Apple Platform (iPhone, iPad, and Mac)
   1. iMessage is Apple's proprietary messaging service, available only between Apple devices. iMessages are sent over Wi-Fi or cellular data rather than traditional SMS networks. iMessage offers enhanced features such as read receipts, typing indicators, multimedia support (photos, videos, etc.), and end-to-end encryption for privacy. These messages appear in blue bubbles in the Messages app.
2. Group message: There are three types of group messages that you might see: group iMessage, group MMS, and group SMS. The Messages app automatically chooses the type of group message to send based on settings, network connection, and carrier plan. For example:
   1. If you and your recipients are using Apple devices and iMessage is turned on, then the group message is sent as an iMessage. If you can't turn on or sign in to iMessage or FaceTime - Apple ... If you can't turn on or sign in to iMessage or FaceTime - Apple ...
   2. If you send a group message to people who are on Android, then the message is sent as an MMS or SMS message. Check if you have an SMS plan enabled by your carrier for the SIM/eSIM that you use on your device. Apple Inc. does not provide SMS services. You need to contact your Carrier to enable SMS and/or MMS.
3. Carrier (Cellular Service Provider)
   1. SMS (Short Message Service): SMS is the traditional text message format used on all mobile phones. It is limited to 160 characters and is sent over the cellular network. SMS does not require an internet connection, but it also lacks features like media sharing or real-time typing indicators. Messages sent via SMS appear in green bubbles on an iPhone.
   2. MMS (Multimedia Messaging Service): MMS allows users to send multimedia content, like images, videos, and audio, along with text messages. Unlike SMS, MMS requires a data connection. MMS messages also appear in green bubbles on iPhones, as they are sent over the cellular network instead of Apple's iMessage system.
   3. RCS (Rich Communication Services): RCS is a modern messaging protocol designed to replace SMS and MMS, offering features similar to iMessage, such as high-quality media sharing, read receipts, typing indicators, and more. It is supported by some Android phones and mobile carriers, though not yet universally available. RCS can be used in messaging apps that support it, but it is not natively integrated into Apple's Messages app at the moment.
4. Third-Party Text Messaging Apps: In addition to iMessage, iPhone users can install and use various third-party messaging apps such as WhatsApp, Facebook Messenger, Telegram, Signal, and more. These apps typically use internet connections (Wi-Fi or data) to send messages and offer additional features like voice and video calls, group chats, file sharing, and security features (like end-to-end encryption). These messages are usually separate from iMessages and are managed within their app.

Each of these types of messages may have different behaviors, settings, and limitations depending on the network, device, or app being used.