I hate my Samsung Galaxy J3 Eclipse. in my Samsung Messages app, I only receive a notification sound for the very first text in a 'conversation' with someone. once the app is open, there are no subsequent notification sounds. I have to close and relaunch the app after every text in order to keep getting notifications. this is NOT how my old Galaxy S3 Edge worked! I spent about an hour chatting online with a Verizon rep to see if I had some setting wrong, but he never came up with anything.