The board does what it should. The whole thing goes without nominal value losses but only if you hang up the phone (Nexus 5) directly. I have a leather bag around it increases the distance by about 5mm. Then arises already properly heat loss, even when your phone is full again. I take the phone about getting out of his pocket, which is a hassle. But this is likely to be justified physically, so there is no deduction. The quality is definitely worth 5 stars.