I've taken the thicker, because I use the Galaxy Note 4 with a silicone cover. The contacts are not very accurate when it a bit slanted sticks that thing on the battery, everything is ok. The included manual is not sufficient, but the Internet can be found quickly a detailed. With the original Samsung S charger pad (EP-P1001EWE) does the inductive charging by the silicone sleeve. But you have to charge your phone exactly, if it is not centrally positioned, the S Charger begins to sum and does not charge. NFC works for me anyway easily. As cheaper (and especially stock) than the white S-Charger Cover definitely a buy.