U disk inserted into the cell phone is not going to affect the life of the U disk of these, its life consumption may be affected. Unless he this format or read information is prone to errors in the case, then it will give him some of the files inside the U disk data online. Then it will affect the use of the USB flash drive, consumption of these. As long as it does not affect the data and information errors, then it is not much of a problem.
U disk in daily use, play their normal function and performance, these are normal. However, these daily use more or less will produce some wear and tear, with daily use, how much for its service life will have a certain impact, but since the USB flash drive is to buy to use, as long as the use of normal norms, which is originally his duty ah.