It would help if you gave us a few more details. Are you talking about text messages? What wireless service are you using? When it hangs, are you able to make phone calls? (If not, it's probably due to poor cell reception.)
I bot my s3 mini jul27 den everyday it hung in meseges..even som1 txt me and it apirs on the notifcation i cant read it.u cant open it.i cant write reply or new mesege.and note pops out saying messeges stopped..everyday same case scenario im xperiencing.aug4 they replace mu unit but its still the same.the worst is its randomly unlike in the first unit it hpens once a day.niw its 3-4times a day and hungs also in other apps.my network is smart...pls answer me...thnks
Have you called the support phone number for your cell phone service? Tell them about your problem, and see if they can help you. It sounds like a problem with the service, not with the phone, since you already got a replacement.
I realize that. That's why I'm saying that the problem is with the service, not the phone. Call your wireless provider and tell them you're having problems with the messaging service, even after they replaced the phone.