Each part of an Advanced Messaging RCS message is billed separately, based on your current rate plan. This may affect billing for some plans.
Standard text and multimedia message rates apply for Advanced Messaging Rich Communication Services (RCS) messages when you use your device’s default messaging app (Samsung Messages or Motorola Messages). If your plan includes unlimited texts, you won’t be billed for Advanced Messaging RCS.1
Each RCS chat, message, or attachment is billed separately. If you have limited messages or a pay-per-use plan, you’ll be billed at your current messaging rates. If you send a message with multiple attachments, each attachment—as well as your text message—is counted and billed separately.
Example: If you send a text message and attach a photo and a video, it will be billed as three messages. Attachments can be photos, videos, contacts, calendar items, or any other attachment.
Good to know: For a better Android RCS messaging experience that has more features for more devices, switch to Google Messages on your Android smartphone. Google Messages offers end-to-end encryption for your RCS messages with other Google Messages users. When you use third-party RCS messaging apps, such as Google Messages, it counts toward your plan’s data usage, but it doesn’t count toward your message limit.