SMS does not have that functionality. iPhones get around this by simultaneously using data and sms functionality by tying in the number to your Apple ID, and then sending the read receipt through the internet via another messaagr separate from the SMS. Samsung did something like this before with the ChatOn app, but nobody used it so they phased it out. Samsungs now have an Enhanced Messaging option in the settings which I think works similar to iMessage and provides read receipts, but I think some carriers disabled that so you'd use their own messaging services *cough*Verizon*cough*