I always have a good connection in the telecom network and the speed in the LTE network III is breathtaking.
So far the battery has held 9-10 hours at me. The devices are permanently connected in the time and it will also like streamed from Netflix series episodes or looked on Youtube music videos.
The deduction of points will receive the device, because you must first manually change some settings for the telecom network, so that the connection also works to the 4G network.