What does "a few grain of salt in the pocket" mean in this sentense?
The sentense is
"Hey, if you love cheap, want a smartphone but the your pocket only has a few grain of salt within them, then you'd be happy to know that Motorola is planning cheap mid-ranged Android smartphones for next year."
I can't get what did he mean by this phrase: "but your pocket only has a few grain of salt within them"