Bin Zerspanugsmechaniker and carry the phone in my work clothes permanet with me.
It is very robust and shock survived it without any problems.
I do not like even two or three times from the bag on the floor (height 1 meter).
Everything without problems.
One must not expect too much from this course mobile.
It is now times what one calls a cell phone, text messaging and a calendar has etc.
My cell phone is also permanent. I phone so approximately 5 to 10 minutes on the day of the device. The battery lasts a full charge 10 to 12 days ago.
I can only recommend.