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I don't have the killswitch off. Apple hasn't shown that they intend to use this feature yet and until they do, I don't see a reason for me to turn it off.
 
what does the killswitch do? i searched and couldn't really find an answer

Apple can remove any app from all iphones for any reason. Turning the killswitch off takes away Apple's ability to remove an app from your iphone.
 
They didn't even use the killswitch on NetShare. I doubt they'll use it for anything unimportant.
 
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