Where there is good things, there must be bad things as well. Just as a coin has two sides. There are cheap electronics of good quality, there must be bad ones. Frankly speaking, I happen to be the user of some bad electronics, which really drive me crazy.
I have bought two mp3s only in several months. It was not because I am a person of chasing fashion, so I changed products frequently. The truth is, both mp3 I got were in bad quality, and they were just broken out even with my special care. I remember they were both easily power of, even though they had been charged for a whole day. This really made me feel crazy and depressed. I really felt the inconvenience they left me.
So, sometimes electronics are not all good, they may have bad ones.