How to config ipsec with Xauth for iPhone

Can setup Cisco IPSec on ROS for iPhone ? If yes, could your share your config ?

This is the example you must use:
http://wiki.mikrotik.com/wiki/Manual:IP/IPsec#Road_Warrior_setup_with_Mode_Conf

It even has iPhone example included

I have gor problem with mikrotik ip sec for Apple ios
the log :
Failed to get valid proposal
Failed to pre process ph1 packet(side :1,status : 1)
phase1 negotioation failed

what shall i do ?