Sorry, I was using S4 on and off, I forgot to check this thread, if you saw the negative feedback it did not specify which battery it was on feedbacks, looking through previous ones, some people were talking about a HTC One, and I went through other eBay sellers selling the same battery, one person sold 30 and not one negative feedback and feedbacks said it was a very good battery, so I'll take my chance, and about Samsung, well they probably do other stuff that could potentially increase the price of producing these batteries or something hence why they didn't get higher ones.