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At this point in time, I don't think there is a way to check this. However, when applications become available, someone might make have one to purchase.
 
I was wondering the same thing. That is too bad. I kept looking but didn't see anything so I came on here. Love these forums.
 
Short of jailbreaking, there's no way...unless you look at the icon in the upper right or you look at the lock screen when the iPhone is connected to a power source.
 
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