I'm a parent of a teenager. I send him texts through email (yahoo via verizon service). For the past few months, some of my texts take HOURS for him to receive. I thought at first he was just blowing me off, and then telling me tales. But I can see the arrival time and I can check my sent time. We are in a well populated area, and can't blame service towers. And sometimes they go right through and sometimes not. Is there a setting on the phone that allows you to prioritize incoming texts, or on that same note - de-prioritize them? I get very upset when I don't hear right back from him. Does anyone know why this happens?