Hi,

first of all, I'm very sorry if there is already answer to this problem. I tried searching but found nothing.

I want to know, if there is any way how to identify incoming sms as reply to some sent sms. I'm not sure if this is even possible, if operators sent some identification that this message is reply to some another.

Example:
- I sent message "hello" to number 123 and message "hi" to number 123.
- number 123 reply to message "hi" with "something"

I need to know, that he replied to "hi" and not to "hello"

Thanks for any idea.

There is no any identification in the SMS which can be used for this purpose. Only with some keywords included in the "answer" you can identify a thread.

Many phones have a menu item called "reply", but it's not a reply like in e-mail, it just sends a new SMS.