In short, this guide in which you see step by step how you can activate the RCS chats on the iPhone with iOS 18. Thus, by the feature of this chat standard, users will be able to send photos and video content at high resolution, share the location in text conversations or participate in group discussions, including with android devices.
Apple has kept the word and as promised since the end of last year, has introduced the RCH (Rich Communication Services) coat for iPhone, starting with the second Beta 18 version for developers. However, at the moment, RCS is only available in the USA for a limited number of users, because activating this service also depends on mobile operators. However, in the fall, when launching the final version of the iOS 18 system, RCS chats will be available for larger users in several countries.
How can you activate RCS chats on iPhone
1. First, make sure you have installed iOS 18 or a newer version.
2. Open the Settings app on the iPhone.
3. Roll to the bottom and open the app (apps) list.
4. Open the settings for the Messages app.

5. At the text messages section, activate the RCS chats on the iPhone from the RCS Messaging switch.

After this step, you will be able to benefit from all RCS (Rich Communication Services) chats on your iPhone.
Related: Apple announces RCS messages on iPhone in 2024
If RCS chats do not work even if you have activated this option, you will most likely need to contact the mobile operator to activate this service.