i did my first data back up on feb 2013 and i have backed up my bbm contacts as well. my phone was formated on april 2013 and when i tried to restore the data, some of the data was missing including the bbm contacts. how can i retrive the feb 2013 data? i really need the bbm contacts to be restored as i use it not only for personal use but for business as well. your prompt response and assistance is highly appreciated.