The first cover has been broken within a week. The bridge over the charging contacts has erupted.
The second cover was also broken in a few days. A corner has erupted.
The third cover has kept no two days. Here one of the webs has erupted again.
By comparison, the cover for my predecessor smartphone has kept approximately two years. Sure, in the end it had then scratches and dents, but this is also the function of a cover. Every few days to break down in very pfleglichem use, but indicates very poor quality.
NB As usual, Amazon has replaced or refunded without any problems.