It seems that if you play on different devices, your PMs do not sync at all. I like to use my tablet at home because it's easier and bigger than my phone.
But of course, tablet doesn't have anything outside of wifi, so I'll use my phone else where.
If I had PMs going, I best memorize them because from the phone to the tablet, they do not sync.
Does that mean that messages are stored on the device itself?