fix bug JOYL-99, network info is null when the mobile does not have sim card.

add the judgement.
Merge pull request #233 from lwanghaol/master

 fix bug:JOYL-96,continue to download when update the built-in virtual Shoutcut list
Merge pull request #235 from whuthm/master

fix bug JOYL-99, network info is null when the mobile does not have sim card.
Merge pull request #72 from heyongjian/master

pull