You Don't Need to Do Anything For it To Say That
When you Post on your Phone From the App Facebook Will Detect that you Are Using
That Device and Will Add That When you Go to Post a Status
Why Does it Not Always Show Up Tho ?
if you Post on a Computer it Wont Say That
If you Post On the PC Site On your Phone It Wont Say That
Can i Get Facebook to Say That Even if Im Not On my Phone
No you Can Not if your On a Computer
When you Post Things on Facebook it Will Not Say Anything
Its a Good Way to Know if Somebody's Post Are Coming From your Mobile Device
Or if its Coming From The Computer
Just Look at the Post And it Will Tell you
if it Doesn't Say Via Device Name Or Mobile
Than its Coming From The Computer