SMS

My dad and I constantly text back and forth so he knows if he has to pick me up from school or other things. He uses a texting app since he doesn't have texting in his phone plan. I have unlimited texting. told, I tried to send him a text, but he never got it. It's the same today as well. I know that he can send texts to me, but mine aren't going through. My texts say that they sent, but he never got them. Any ideas?

Okay, so I was playing Super Mario 3D Land, when I noticed I had tons of item houses popping up from people I had never Street-passed or invited. I quit the game and check my Streetpass Mii plaza, and I saw 63 people in my plaza, who I NEVER invited or Street-passed EVER. They have names like Rook, ...MAU..., juancarlos, etc. I met them the second I turned on my 3DS today, according to what their descriptions said. I wasn't hacked as far as I know. Can anyone explain this?

I own a Nintendo DS Lite, but am buying a 3DS very soon. I'm wondering if my DS Lite games can be played on the 3DS, NOT if the 3DS games can be played on a DS Lite.