I'm not friends with this person on facebook but used to. I use iphone to check about this, So when i clicked on chat window last nite it said said "last active 2 hours ago" , and this morning it changed to "active now" when his phone is off when my friend called him. So how do i know he is on computer on mobile.
Also, i can see mobile icon next to "message" on his fb page.
Thank u