Just awesome. Just open access to the battery, position the device on the battery and the tab on contacts that are a little higher, you close and voila. It remains only rained buy the transmitter (wireless charger) and ask the top. It works perfectly on my Galaxy S4 Active. No back cover release problem of the phone, and especially no need to open and close the cap that is on the input power of this model is IP67 (waterproof) with the wear that this could result . For the charger I chose the "Aukey Qi charger Wireless Transmitter Charging Pad / IQ" I have also evaluated positively right here. But any should work for it IQ. The charges faster that the bed In fact I bought it for my office and I tried it with a charge to 1/3. Within two hours he was almost at full load. For faster loads nothing beats the industry but it is so much more convenient with this device.