Hello
Your friends have a phone u don't have??
Don't worry here it is :

for example


Here is how to do
Just login to your fb account and then click on these links for following mobiles
android:   http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=00feea04186100ee4fdac07465190067

Apple ipad:  http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=350939045778
Black berry: http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=2254487659
Apple mac book :   http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=7c5ad8040ff712b40a349e9cf45d6f64
Windows mobile : http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=4f41726f826e687603af91b34339b671
Nokia N97 mini :http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=4199c101410346dde1dba53148abe5e7
HTC Touch HD : http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=31b32609bd82df5d460ef993d3511ec9
Iphone 5 :http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=109381645823618
Iphone 3gS: http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=03e39154f4014a411598c4013f3aedc3
Ipod touch  : http://www.facebook.com/connect/prompt_feed.php?preview=true&api_key=4df3200f360533d57e0353bed01109d8