The Samsung Galaxy S4 Active is a rugged version of the Galaxy S4. Currently, it is only on AT&T's 4G LTE network.
Miguel Labrador @miguellabrador
声誉积分: 736
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发帖于: 2014年10月9日
Why is my screen gray or black when it should be displaying something? This happens every time I try to use the device and every time I turn it on or off.
这是一个好问题吗?
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