I am using facebook sdk v 2.3 and try to find friends birthdate.using query @"me/friends" we can find only that friends who using same app. but i need to find all friends with their details with birthday. I am using @"me/taggable_friends" this query gives the detail of friends without birthday. So Give me the permission name or query any other way to get all friends with birthday.
I am using code like..
if ([FBSDKAccessToken currentAccessToken]) {
[[[FBSDKGraphRequest alloc] initWithGraphPath:@"me/taggable_friends?limit=10" parameters:nil]
startWithCompletionHandler:^(FBSDKGraphRequestConnection *connection, id strong textresult, NSError *error) {
if (!error) {
NSLog(@"fetched user:%@", result);
}
}];
}

Try this code and first approved your app on facebook developer account. after that you can easily access friend detail with birth date.