cell phones with good speakers

[Shannon]

I upgrading my mobile soon Shannon, What kind of situations do you play ultrasonics on your mobile phone? Do you ever use your mobile phone for playing ultrasonics at night time whilst you sleep?

Yes, as I said, sometimes I am just too tired after working all day to lug my laptop around the house. On those days, I use my cell phone.

I also use it for testing situations, for demonstrating my programs to people I meet in public, and for sharing copies of the free stuff with people I encounter who are interested.