You’ve just received a text message from someone. If you have read receipts enabled on your iOS device, you can let your fellow texters know when you’ve read their latest messages.
Read receipts, which can be enabled across the board or just for specific individuals, can be a useful feature if you don’t want to keep the other person in suspense wondering if you’ve read his or her message. But they can also become a source of anxiety for all parties, when you see someone view your message but not necessarily respond in a timely manner.
Stop stressing: there is also a way to disable read receipts.
The process for enabling and disabling read receipts is the same on an iPhone, iPad, and iPod touch. Read receipts are not available for all types of messages, though. Apple iMessage-enabled texts are supported, but straight SMS messages are not. You can tell the difference by color. Your iMessage-enabled texts appear in blue, while SMS messages appear in green. Group messages don’t support read receipts either.