Hello Bin,


         I am very sorry to hear that did not know or was not aware of
this, but am aware of the controlled internet in parts of Asia and soon will come to North America sooner than we think!
  But nexttime always make a backup file of your contacts by exporting  to SD and then look for the file 000001.vcf and email yourself or keep a copy on computer. So you always have a copy if they allow you to?

     Good Luck