If the location time is red on Find My iPhone, it means that the location of the device is not being updated. This could be for a number of reasons, including that the device is turned off, the battery is dead, or that the device is not connected to a network. If you are trying to track the location of a device, you should make sure that it is turned on and connected to a network. If the device is turned off, you can try to turn it on by pressing and holding the power button. If the device is not connected to a network, you can try to connect it to a Wi-Fi network or a cellular network.