mobile

So after reading a bunch of posts about adding wireless charging and looking at a lot of QI+ NFC receivers on eBay and Amazon I had a question for you lot. The first few I saw had a heat spreading tape (the security sticker basically had copper on it to spread the heat) and haven't seen many since then (can't even find the originals that did). Should I worry about this? We all know this phone can get really hot. Yes I've applied some patches to help with it, but still, I was concerned!

If anyone could point me to a QI+NFC receiver that does have it, or an after market heat spreading security sticker, that'd be great! I'd also like to double check that the replacement NFC sticker continues to work with tags as well as beaming to another phone! (I'm asking because my GF got the Sprint Galaxy S4 and it doesn't seem to even acknowledge tags like mine does, ps, am using whiztag ntag216). Also, I'm using a Spigen Slim Armor case and want to make sure wireless charging works through it and NFC (tags and beaming) continue to work through it as well.

Thanks guys