Nowadays, many people because of business needs or other reasons, are accustomed to go out with 2 or more cell phones, and the models are not necessarily the same, so prepare a common one tow three data cable is more convenient. General one tow three data cable with a traditional Android interface (flat port), an Android type-c interface, an Apple lightning interface, for a variety of different models of cell phone charging on the market.
Because the USB interface as long as one, a tow three line planning is an inlet port divided into three outlets, so if three cell phones together if the power is scattered, that is to say, three cell phones together with overflowing power time required than they are individually overflowing time is much longer. Of course, even if you are charging two together, the speed will be slower than charging only one, which can not be prevented.
With three lines in use together, the heat dissipation effect of the lines will be more pronounced, and there will be a noticeable rise in temperature at the interface, which will be tricky to unplug and touch. So from the point of view of the use of life, also does not advocate the use of three interfaces together. If the use of fast chargers, and one of the devices to open the fast charging mode, because the current of the data line is relatively high, it is also likely to damage other non-fast charging devices.