maybe i dont know how to enable this, but i use the verizon messaging app, i received quite a few group texts yesterday, and the message just showed up, didnt alert me with a sound or anything, and ot wasnt even the message that showed up, it was the download button, and i had to click it to get the group text, i had wifi and 4g on, does the notification tone not sound? do i have to do something to get it, and why do i have to download the message?