Qi Standard Wireless Charger Charging Receiver for Samsung Galaxy S3 III i9300 It is specially designed for Samsung Galaxy S3. Ultra-thin design,compact and light without increasing additional weight of the S3. Adding wireless charging feature by piggybacking it on the battery of S3, it works well with any Qi-enabled charger. The receiver can be attached to the battery all the time, and it would not interrupt the normal use of the S3. Easy to use.