The battery is used to quickly come from Amazon. Using a little Youtube-guide was the change of batteries no bigger issue. The device has recognized him immediately and has booted normally. Battery life with bunk iOS6 in standby is about 4-5 days until the charge is below 10%.
Only what was annoying that no suction is sent as a "tool". This is however required to remove the display. Since he is not even described as supplied it is not a defect in the product ... so 5 of 5 stars