I think the Z30 has wireless charging built in, give it a shot.
For the S3, you'll either need a wireless charging cover, or a wireless charging coil you can attach under the battery cover, if I remember correctly.
Edit: Yeah, something like this. You can probably find one cheaper on eBay?
For the S3, you'll either need a wireless charging cover, or a wireless charging coil you can attach under the battery cover, if I remember correctly.
Edit: Yeah, something like this. You can probably find one cheaper on eBay?