First impression OK, quickly broken

At first glance, the workmanship and fit looks good. However, it has not worked exactly at the front left corner; it lacks a half millimeter material and the shell comprises the housing not perfect. Thus, these slips quickly top left. But is not too serious (for the price you have to hire even small compromises do).
After 2 weeks of normal use, however, the mentioned upper left corner broken (without any force or that the phone is once fell down).

Quite annoying and I'll throw away the envelope. Perhaps this was a manufacturing fault only with me. Should there with you / them however be directly seen with the corner, I can only recommend it to send back ... that's sooner or later broken definitely.