Lasts much longer than the standard battery // phone acts robust

I am very happy with the battery and the supplied cover. It makes the phone though much thicker, but I find that it is better characterized in the mobile phone and it looks more robust. For battery life I can say that it is as expected top.
I use the phone constantly in breaks at work and at home and have the evening still a good 30% battery (in sleep mode). I would recommend it because the term is really much longer than the original battery.