open facebook on your iphone then change mobile version to desktop version
then click on events that is on the left side of your facebook page
after that Click on setting icon. It will be on top right corner below the home button and next to the link "Today".
Click on Export.then you will get one box shown below
click on the link "export your friends birthdays"
then your phone will ask you about adding calender select add now you will be able to see this calender as well as with your other phone calender. if it fails then do the following
Right click on "Export your friend's birthday" and click on open in new tab.
You will get a link says "webcal://www.facebook.com/ical/b.php?.....
Delete first few letters as "webcal://" and press enter.
It will ask you to save a ical file to your system. Save it somewhere.
Go to your phone calender setting and import this calender.
now you will be able to see this calender as well as with your other phone calender.
then click on events that is on the left side of your facebook page
Click on Export.then you will get one box shown below
click on the link "export your friends birthdays"
then your phone will ask you about adding calender select add now you will be able to see this calender as well as with your other phone calender. if it fails then do the following
OR
Right click on "Export your friend's birthday" and click on open in new tab.
You will get a link says "webcal://www.facebook.com/ical/b.php?.....
Delete first few letters as "webcal://" and press enter.
It will ask you to save a ical file to your system. Save it somewhere.
Go to your phone calender setting and import this calender.
now you will be able to see this calender as well as with your other phone calender.