The Apple iPhone 4S White A1387 is a mobile device that turns on but is locked. This means that the device can be powered up and is functional, but the user cannot access the home screen or use the phone until it is unlocked. The lock could be due to a forgotten passcode, a broken lock screen, or a security feature that is preventing access. In order to use the iPhone, the user would need to bypass the lock and gain access to the device's functionality.
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